diff --git a/libmariadb/ma_stmt_codec.c b/libmariadb/ma_stmt_codec.c
index a91358df..bbb5743b 100644
--- a/libmariadb/ma_stmt_codec.c
+++ b/libmariadb/ma_stmt_codec.c
@@ -260,7 +260,10 @@ my_bool str_to_TIME(const char *str, size_t length, MYSQL_TIME *tm)
       goto error;
     /* conc-371 */
     if (frac_len < 6)
-      tm->second_part*= pow(10, 6 - frac_len);
+    {
+      static ulong mul[]={1000000,100000,10000,1000,100,10};
+      tm->second_part*= mul[frac_len];
+    }
   } else {
     if (sscanf(start, "%d:%d:%d", &tm->hour, &tm->minute,
                                  &tm->second) < 3)
diff --git a/unittest/libmariadb/ps_bugs.c b/unittest/libmariadb/ps_bugs.c
index eb5a61ea..1a1dcdb9 100644
--- a/unittest/libmariadb/ps_bugs.c
+++ b/unittest/libmariadb/ps_bugs.c
@@ -4821,7 +4821,7 @@ static int test_conc_fraction(MYSQL *mysql)
 
     diag("second_part: %ld", tm.second_part);
 
-    expected= 9 * powl(10, (5 - i));
+    expected= 9 * (unsigned int)powl(10, (5 - i));
 
     FAIL_IF(tm.second_part != expected, "expected fractional part to be 900000");