diff --git a/configure b/configure
index 56e3f8f2425..de8660d00db 100755
--- a/configure
+++ b/configure
@@ -3725,7 +3725,11 @@ case ${wal_segsize} in
  16) ;;
  32) ;;
  64) ;;
-  *) as_fn_error $? "Invalid WAL segment size. Allowed values are 1,2,4,8,16,32,64." "$LINENO" 5
+ 128) ;;
+ 256) ;;
+ 512) ;;
+ 1024) ;;
+  *) as_fn_error $? "Invalid WAL segment size. Allowed values are 1,2,4,8,16,32,64,128,256,512,1024." "$LINENO" 5
 esac
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: ${wal_segsize}MB" >&5
 $as_echo "${wal_segsize}MB" >&6; }
diff --git a/configure.in b/configure.in
index d7c501af6a5..b965f476692 100644
--- a/configure.in
+++ b/configure.in
@@ -358,7 +358,11 @@ case ${wal_segsize} in
  16) ;;
  32) ;;
  64) ;;
-  *) AC_MSG_ERROR([Invalid WAL segment size. Allowed values are 1,2,4,8,16,32,64.])
+ 128) ;;
+ 256) ;;
+ 512) ;;
+ 1024) ;;
+  *) AC_MSG_ERROR([Invalid WAL segment size. Allowed values are 1,2,4,8,16,32,64,128,256,512,1024.])
 esac
 AC_MSG_RESULT([${wal_segsize}MB])
 
diff --git a/doc/src/sgml/installation.sgml b/doc/src/sgml/installation.sgml
index 39774a058ac..26bfab1ea5f 100644
--- a/doc/src/sgml/installation.sgml
+++ b/doc/src/sgml/installation.sgml
@@ -1049,7 +1049,7 @@ su - postgres
          the size of each individual file in the WAL log.  It may be useful
          to adjust this size to control the granularity of WAL log shipping.
          The default size is 16 megabytes.
-         The value must be a power of 2 between 1 and 64 (megabytes).
+         The value must be a power of 2 between 1 and 1024 (megabytes).
          Note that changing this value requires an initdb.
         </para>
        </listitem>