diff --git a/include/ma_context.h b/include/ma_context.h
index 966fd0cd..d9ba1ffc 100644
--- a/include/ma_context.h
+++ b/include/ma_context.h
@@ -301,7 +301,7 @@ struct mysql_async_context {
   void (*suspend_resume_hook)(my_bool suspend, void *user_data);
   void *suspend_resume_hook_user_data;
 
-  /* If non-NULL,  this is a poitner to the result of getaddrinfo() currently
+  /* If non-NULL, this is a pointer to the result of getaddrinfo() currently
    * under traversal in pvio_socket_connect(). It gets reset to NULL when a
    * connection has been established to a server. The main objective is to
    * free this memory resource in mysql_close() while an initiated connection
diff --git a/include/ma_global.h b/include/ma_global.h
index 5bb34360..1b9b3462 100644
--- a/include/ma_global.h
+++ b/include/ma_global.h
@@ -290,8 +290,8 @@ typedef unsigned short ushort;
 /* From old s-system.h */
 
 /*
-  Support macros for non ansi & other old compilers. Since such
-  things are no longer supported we do nothing. We keep then since
+  Support macros for non-ansi & other old compilers. Since such
+  things are no longer supported we do nothing. We keep them since
   some of our code may still be needed to upgrade old customers.
 */
 #define _VARARGS(X) X
@@ -394,7 +394,7 @@ typedef SOCKET_SIZE_TYPE size_socket;
 #define FN_EXTCHAR	'.'
 #define FN_HOMELIB	'~'	/* ~/ is used as abbrev for home dir */
 #define FN_CURLIB	'.'	/* ./ is used as abbrev for current dir */
-#define FN_PARENTDIR	".."	/* Parentdirectory; Must be a string */
+#define FN_PARENTDIR	".."	/* Parent directory; Must be a string */
 #define FN_DEVCHAR	':'
 
 #ifndef FN_LIBCHAR
diff --git a/include/ma_pvio.h b/include/ma_pvio.h
index 752ea034..1eff3959 100644
--- a/include/ma_pvio.h
+++ b/include/ma_pvio.h
@@ -9,7 +9,7 @@
 #endif
 
 /* CONC-492: Allow to build plugins outside of MariaDB Connector/C
-   source tree wnen ma_global.h was not included. */
+   source tree when ma_global.h was not included. */
 #if !defined(_global_h) && !defined(MY_GLOBAL_INCLUDED)
 typedef unsigned char uchar;
 #endif
diff --git a/include/mariadb_com.h b/include/mariadb_com.h
index 93d92179..2d3e778b 100644
--- a/include/mariadb_com.h
+++ b/include/mariadb_com.h
@@ -170,7 +170,7 @@ enum enum_server_command
 #define CLIENT_SSL_VERIFY_SERVER_CERT_OBSOLETE CLIENT_SSL_VERIFY_SERVER_CERT
 #define CLIENT_REMEMBER_OPTIONS  (1UL << 31)
 
-/* MariaDB specific capabilities */
+/* MariaDB-specific capabilities */
 #define MARIADB_CLIENT_FLAGS 0xFFFFFFFF00000000ULL
 #define MARIADB_CLIENT_PROGRESS (1ULL << 32)
 #define MARIADB_CLIENT_RESERVED_1 (1ULL << 33) /* Former COM_MULTI, don't use */
diff --git a/include/mysql.h b/include/mysql.h
index effec1b1..8abe74f3 100644
--- a/include/mysql.h
+++ b/include/mysql.h
@@ -225,7 +225,7 @@ extern const char *SQLSTATE_UNKNOWN;
     MYSQL_OPT_TLS_VERSION,
     MYSQL_OPT_ZSTD_COMPRESSION_LEVEL,
 
-    /* MariaDB specific */
+    /* MariaDB-specific */
     MYSQL_PROGRESS_CALLBACK=5999,
     MYSQL_OPT_NONBLOCK,
     /* MariaDB Connector/C specific */
diff --git a/libmariadb/ma_charset.c b/libmariadb/ma_charset.c
index f6ed6f80..95b569d2 100644
--- a/libmariadb/ma_charset.c
+++ b/libmariadb/ma_charset.c
@@ -1212,7 +1212,7 @@ size_t mysql_cset_escape_slashes(const MARIADB_CHARSET_INFO * cset, char *newstr
         escape_overflow = TRUE;
         break;
       }
-      /* copy non escaped character */
+      /* copy non-escaped character */
       *newstr++ = *escapestr;
     }
   }
@@ -1394,7 +1394,7 @@ struct st_madb_os_charset MADB_OS_CHARSET[]=
   {"57011", "ISCII Punjabi", NULL, NULL, MADB_CS_UNSUPPORTED},
   {"65000", "utf-7 Unicode (UTF-7)", NULL, NULL, MADB_CS_UNSUPPORTED},
   {"65001", "utf-8 Unicode (UTF-8)", "utf8", NULL, MADB_CS_EXACT},
-  /* non Windows */
+  /* non-Windows */
 #else
   /* iconv encodings */
   {"ASCII", "US-ASCII", "ascii", "ASCII", MADB_CS_APPROX},
diff --git a/libmariadb/ma_client_plugin.c.in b/libmariadb/ma_client_plugin.c.in
index f6175035..f6a1e2b5 100644
--- a/libmariadb/ma_client_plugin.c.in
+++ b/libmariadb/ma_client_plugin.c.in
@@ -302,7 +302,7 @@ int mysql_client_plugin_init()
 /**
   Deinitializes the client plugin layer.
 
-  Unloades all client plugins and frees any associated resources.
+  Unloads all client plugins and frees any associated resources.
 */
 
 void mysql_client_plugin_deinit()
diff --git a/libmariadb/ma_decimal.c b/libmariadb/ma_decimal.c
index de6062df..a2841b97 100644
--- a/libmariadb/ma_decimal.c
+++ b/libmariadb/ma_decimal.c
@@ -19,7 +19,7 @@
 /*
 =======================================================================
   NOTE: this library implements SQL standard "exact numeric" type
-  and is not at all generic, but rather intentinally crippled to
+  and is not at all generic, but rather intentionally crippled to
   follow the standard :)
 =======================================================================
   Quoting the standard
diff --git a/libmariadb/ma_dtoa.c b/libmariadb/ma_dtoa.c
index 05ab0f0b..29faff54 100644
--- a/libmariadb/ma_dtoa.c
+++ b/libmariadb/ma_dtoa.c
@@ -597,7 +597,7 @@ typedef struct Bigint
 } Bigint;
 
 
-/* A simple stack-memory based allocator for Bigints */
+/* A simple stack-memory-based allocator for Bigints */
 
 typedef struct Stack_alloc
 {
diff --git a/libmariadb/ma_io.c b/libmariadb/ma_io.c
index 74a51fa3..61b19a6d 100644
--- a/libmariadb/ma_io.c
+++ b/libmariadb/ma_io.c
@@ -56,7 +56,7 @@ MA_FILE *ma_open(const char *location, const char *mode, MYSQL *mysql)
     }
   }
 #ifdef _WIN32
-  /* See CONC-44: we need to support non ascii filenames too, so we convert
+  /* See CONC-44: we need to support non-ascii filenames too, so we convert
      current character set to wchar_t and try to open the file via _wsopen */
   else
    {
diff --git a/libmariadb/ma_net.c b/libmariadb/ma_net.c
index 2e932b17..f2c24db8 100644
--- a/libmariadb/ma_net.c
+++ b/libmariadb/ma_net.c
@@ -362,7 +362,7 @@ int ma_net_real_write(NET *net, const char *packet, size_t len)
 }
 
 /*****************************************************************************
- ** Read something from server/clinet
+ ** Read something from server/client
  *****************************************************************************/
 static ulong ma_real_read(NET *net, size_t *complen)
 {
@@ -381,7 +381,7 @@ static ulong ma_real_read(NET *net, size_t *complen)
   {
     while (remain > 0)
     {
-      /* First read is done with non blocking mode */
+      /* First read is done with non-blocking mode */
       if ((length=ma_pvio_cache_read(net->pvio, pos,remain)) <= 0L)
       {
         len= packet_error;
diff --git a/libmariadb/mariadb_lib.c b/libmariadb/mariadb_lib.c
index c3fabe4f..d9b65bca 100644
--- a/libmariadb/mariadb_lib.c
+++ b/libmariadb/mariadb_lib.c
@@ -325,7 +325,7 @@ static int cli_report_progress(MYSQL *mysql, uchar *packet, uint length)
   return 0;
 }
 
-/* Get the length of next field. Change parameter to point at fieldstart */
+/* Get the length of next field. Change parameter to point at field start */
 ulong
 net_field_length(uchar **packet)
 {
@@ -1917,7 +1917,7 @@ restart:
     mysql->server_capabilities|= (unsigned int)(uint2korr(end + 5)) << 16;
     pkt_scramble_len= uint1korr(end + 7);
 
-    /* check if MariaD2B specific capabilities are available */
+    /* check if MariaDB-specific capabilities are available */
     if (mariadb_connection(mysql) && !(mysql->server_capabilities & CLIENT_MYSQL))
     {
       mysql->extension->mariadb_server_capabilities= (ulonglong) uint4korr(end + 14);
@@ -3004,7 +3004,7 @@ mysql_store_result(MYSQL *mysql)
 
 
 /**************************************************************************
-** Alloc struct for use with unbuffered reads. Data is fetched by domand
+** Alloc struct for use with unbuffered reads. Data is fetched by demand
 ** when calling to mysql_fetch_row.
 ** mysql_data_seek is a noop.
 **
diff --git a/libmariadb/mariadb_rpl.c b/libmariadb/mariadb_rpl.c
index aaaba84a..3ab32542 100644
--- a/libmariadb/mariadb_rpl.c
+++ b/libmariadb/mariadb_rpl.c
@@ -964,7 +964,7 @@ static uint8_t mariadb_rpl_send_semisync_ack(MARIADB_RPL* rpl, MARIADB_RPL_EVENT
   }
   if (!event->is_semi_sync || (event->semi_sync_flags != SEMI_SYNC_ACK_REQ))
   {
-    rpl_set_error(rpl, CR_BINLOG_SEMI_SYNC_ERROR, 0, "This event doesn't require to send semi synchronous acknoledgement");
+    rpl_set_error(rpl, CR_BINLOG_SEMI_SYNC_ERROR, 0, "This event doesn't require to send semi synchronous acknowledgement");
     return 1;
   }
 
@@ -1109,7 +1109,7 @@ MARIADB_RPL_EVENT * STDCALL mariadb_rpl_fetch(MARIADB_RPL *rpl, MARIADB_RPL_EVEN
       RPL_CHECK_POS(ev, ev_end, 1);
       rpl_event->ok= *ev++;
 
-      /* CONC-470: add support for semi snychronous replication */
+      /* CONC-470: add support for semi synchronous replication */
       if (rpl->is_semi_sync && (rpl_event->is_semi_sync= (*ev == SEMI_SYNC_INDICATOR)))
       {
         RPL_CHECK_POS(ev, ev_end, 1);
@@ -1299,7 +1299,7 @@ MARIADB_RPL_EVENT * STDCALL mariadb_rpl_fetch(MARIADB_RPL *rpl, MARIADB_RPL_EVEN
       ev+= 4;
       rpl->fd_header_len= rpl_event->event.format_description.header_len= *ev;
       ev+= 1;
-      /*Post header lengths: 1 byte for each event, non used events/gaps in enum should
+      /*Post header lengths: 1 byte for each event, non-used events/gaps in enum should
                              have a zero value */
       len= ev_end - ev - 5;
       rpl_set_string_and_len(&rpl_event->event.format_description.post_header_lengths, ev, len);
@@ -1765,7 +1765,7 @@ MARIADB_RPL_EVENT * STDCALL mariadb_rpl_fetch(MARIADB_RPL *rpl, MARIADB_RPL_EVEN
          WRITE/UPDATE/DELETE_ROWS_EVENT_COMPRESSED_V1 (MariaDB only)
          WRITE/UPDATE/DELETE_ROWS_EVENT (MySQL only)
 
-         ROWS events are written for row based replicatoin if data is
+         ROWS events are written for row-based replication if data is
          inserted, deleted or updated.
 
          Header
diff --git a/libmariadb/secure/ma_schannel.c b/libmariadb/secure/ma_schannel.c
index b2aead62..3b489f2e 100644
--- a/libmariadb/secure/ma_schannel.c
+++ b/libmariadb/secure/ma_schannel.c
@@ -295,7 +295,7 @@ SECURITY_STATUS ma_schannel_client_handshake(MARIADB_TLS *ctls)
   pvio= ctls->pvio;
   sctx= (SC_CTX *)ctls->ssl;
 
-  /* Initialie securifty context */
+  /* Initialize security context */
   BuffersOut.BufferType= SECBUFFER_TOKEN;
   BuffersOut.cbBuffer= 0;
   BuffersOut.pvBuffer= NULL;
diff --git a/libmariadb/secure/openssl.c b/libmariadb/secure/openssl.c
index edc90a3b..1c24554f 100644
--- a/libmariadb/secure/openssl.c
+++ b/libmariadb/secure/openssl.c
@@ -471,7 +471,7 @@ my_bool ma_tls_connect(MARIADB_TLS *ctls)
   mysql= (MYSQL *)SSL_get_app_data(ssl);
   pvio= mysql->net.pvio;
 
-  /* Set socket to non blocking if not already set */
+  /* Set socket to non-blocking if not already set */
   if (!(blocking= pvio->methods->is_blocking(pvio)))
     pvio->methods->blocking(pvio, FALSE, 0);
 
diff --git a/libmariadb/secure/schannel.c b/libmariadb/secure/schannel.c
index 31806f24..2ae5fddf 100644
--- a/libmariadb/secure/schannel.c
+++ b/libmariadb/secure/schannel.c
@@ -410,7 +410,7 @@ typedef struct _MA_SCHANNEL_CREDENTIALS {
 
   Take care of specific TLS versions and cipher suites.
 
-  This function choses between the legacy and new credential structures
+  This function chooses between the legacy and new credential structures
   (SCHANNEL_CRED rsp SCH_CREDENTIALS) based on the OS version and the
   requested cipher suite.
 
diff --git a/plugins/auth/auth_gssapi_client.c b/plugins/auth/auth_gssapi_client.c
index 6f6c6ceb..6437e487 100644
--- a/plugins/auth/auth_gssapi_client.c
+++ b/plugins/auth/auth_gssapi_client.c
@@ -110,7 +110,7 @@ struct st_mysql_client_plugin_AUTHENTICATION _mysql_client_plugin_declaration_ =
   MYSQL_CLIENT_AUTHENTICATION_PLUGIN_INTERFACE_VERSION,
   "auth_gssapi_client",
   "Shuang Qiu, Robbie Harwood, Vladislav Vaintroub, Georg Richter",
-  "GSSAPI/SSPI based authentication",
+  "GSSAPI/SSPI-based authentication",
   {0, 1, 0},
   "BSD",
   NULL,
diff --git a/plugins/auth/caching_sha2_pw.c b/plugins/auth/caching_sha2_pw.c
index 6339e934..ef5ef1fe 100644
--- a/plugins/auth/caching_sha2_pw.c
+++ b/plugins/auth/caching_sha2_pw.c
@@ -62,7 +62,7 @@
 #define CACHED_LOGIN_SUCCEEDED 3
 #define RSA_LOGIN_REQUIRED 4
 
-/* MySQL server allows requesting public key only for non secure connections.
+/* MySQL server allows requesting public key only for non-secure connections.
    secure connections are:
      - TLS/SSL connections
      - unix_socket connections
diff --git a/plugins/pvio/pvio_socket.c b/plugins/pvio/pvio_socket.c
index ecacb83b..85437351 100644
--- a/plugins/pvio/pvio_socket.c
+++ b/plugins/pvio/pvio_socket.c
@@ -359,7 +359,7 @@ ssize_t pvio_socket_async_read(MARIADB_PVIO *pvio, uchar *buffer, size_t length)
   r= recv(csock->socket,(void *)buffer, length, read_flags);
 #else
   /* Windows doesn't support MSG_DONTWAIT, so we need to set
-     socket to non blocking */
+     socket to non-blocking */
   pvio_socket_blocking(pvio, 0, 0);
   r= recv(csock->socket, (char *)buffer, (int)length, 0);
 #endif
@@ -435,7 +435,7 @@ ssize_t pvio_socket_async_write(MARIADB_PVIO *pvio, const uchar *buffer, size_t
   r= ma_send(csock->socket, buffer, length, write_flags);
 #else
   /* Windows doesn't support MSG_DONTWAIT, so we need to set
-     socket to non blocking */
+     socket to non-blocking */
   pvio_socket_blocking(pvio, 0, 0);
   r= send(csock->socket, (const char *)buffer, (int)length, 0);
 #endif
@@ -638,7 +638,7 @@ static int pvio_socket_internal_connect(MARIADB_PVIO *pvio,
   csock= (struct st_pvio_socket *)pvio->data;
   timeout= pvio->timeout[PVIO_CONNECT_TIMEOUT];
 
-  /* set non blocking */
+  /* set non-blocking */
   pvio_socket_blocking(pvio, 0, 0);
 
 #ifndef _WIN32
diff --git a/unittest/libmariadb/my_test.h b/unittest/libmariadb/my_test.h
index 04217aca..94cdf689 100644
--- a/unittest/libmariadb/my_test.h
+++ b/unittest/libmariadb/my_test.h
@@ -143,7 +143,7 @@ do {\
 do {\
   if (!mariadb_connection(mysql))\
   {\
-    diag("Skip test for non MariaDB server");\
+    diag("Skip test for non-MariaDB server");\
     return OK;\
   }\
 } while(0)
@@ -423,7 +423,7 @@ my_bool query_int_variable(MYSQL *con, const char *var_name, int *var_value)
           (const char *) var_name);
 
   FAIL_IF(mysql_query(con, query_buffer), "Query failed");
-  FAIL_UNLESS(rs= mysql_store_result(con), "Invaliid result set");
+  FAIL_UNLESS(rs= mysql_store_result(con), "Invalid result set");
   FAIL_UNLESS(row= mysql_fetch_row(rs), "Nothing to fetch");
 
   is_null= row[0] == NULL;
diff --git a/unittest/libmariadb/ps.c b/unittest/libmariadb/ps.c
index 111ce2a6..5e02002d 100644
--- a/unittest/libmariadb/ps.c
+++ b/unittest/libmariadb/ps.c
@@ -4030,7 +4030,7 @@ static int test_rename(MYSQL *mysql)
   check_stmt_rc(rc, stmt);
 
   rc= mysql_stmt_execute(stmt);
-  FAIL_IF(!rc, "Errr expected");
+  FAIL_IF(!rc, "Error expected");
 
   rc= mysql_query(mysql, "rename table t2 to t1, t4 to t3");
   check_mysql_rc(rc, mysql);
diff --git a/unittest/libmariadb/ps_bugs.c b/unittest/libmariadb/ps_bugs.c
index df019f68..34dd3926 100644
--- a/unittest/libmariadb/ps_bugs.c
+++ b/unittest/libmariadb/ps_bugs.c
@@ -2343,7 +2343,7 @@ static int test_bug4030(MYSQL *mysql)
   rc= mysql_stmt_fetch(stmt);
   FAIL_UNLESS(rc == 0, "rc != 0");
   FAIL_UNLESS(memcmp(&time_canonical, &time_out, sizeof(time_out)) == 0, "time_canonical != time_out");
-  FAIL_UNLESS(memcmp(&date_canonical, &date_out, sizeof(date_out)) == 0, "date_canoncical != date_out");
+  FAIL_UNLESS(memcmp(&date_canonical, &date_out, sizeof(date_out)) == 0, "date_canonical != date_out");
   FAIL_UNLESS(memcmp(&datetime_canonical, &datetime_out, sizeof(datetime_out)) == 0, "datetime_canonical != datetime_out");
   mysql_stmt_close(stmt);
   return OK;
@@ -4030,7 +4030,7 @@ static int test_conc154(MYSQL *mysql)
 
   mysql_stmt_close(stmt);
 
-  /* 3rd: non empty result without free_result */
+  /* 3rd: non-empty result without free_result */
   rc= mysql_query(mysql, "INSERT INTO t1 VALUES ('test_conc154')");
   check_mysql_rc(rc, mysql);
 
@@ -4052,7 +4052,7 @@ static int test_conc154(MYSQL *mysql)
 
   mysql_stmt_close(stmt);
 
-  /* 4th non empty result set with free_result */
+  /* 4th non-empty result set with free_result */
   stmt= mysql_stmt_init(mysql);
   rc= mysql_stmt_prepare(stmt, SL(stmtstr));
   check_stmt_rc(rc, stmt);
@@ -5369,7 +5369,7 @@ static int test_conc525(MYSQL *mysql)
   fclose(fp);
 
   /* Test: prepare and execute
-     should fail due to non existing file */
+     should fail due to non-existing file */
   stmt= mysql_stmt_init(mysql);
 
   rc= mysql_stmt_prepare(stmt, SL("LOAD DATA LOCAL INFILE './test.notexist' INTO table t1"));
@@ -5943,7 +5943,7 @@ static int test_conc762(MYSQL *mysql)
 
   mysql_stmt_fetch(stmt);
   FAIL_IF(is_null[0]==0, "Expected NULL value");
-  FAIL_IF(is_null[1]==1, "Expected non NULL value");
+  FAIL_IF(is_null[1]==1, "Expected non-NULL value");
   FAIL_IF(length[0]!=0, "Expected length=0");
   FAIL_IF(length[1]!=3, "Expected length=3");
 
diff --git a/unittest/mytap/tap.c b/unittest/mytap/tap.c
index 0290389f..b7914595 100644
--- a/unittest/mytap/tap.c
+++ b/unittest/mytap/tap.c
@@ -457,7 +457,7 @@ int exit_status() {
    If you don't call the @c plan() function, the number of tests
    executed will be printed at the end.  This is intended to be used
    while developing the unit and you are constantly adding tests.  It
-   is not indented to be used after the unit has been released.
+   is not intended to be used after the unit has been released.
 
 
    @subsection TestRunning Execute the test