diff --git a/config/cmake/H5pubconf.h.in b/config/cmake/H5pubconf.h.in
index 8235c54476..05058d20ef 100644
--- a/config/cmake/H5pubconf.h.in
+++ b/config/cmake/H5pubconf.h.in
@@ -540,9 +540,6 @@
 /* Define if deprecated public API symbols are disabled */
 #cmakedefine H5_NO_DEPRECATED_SYMBOLS @H5_NO_DEPRECATED_SYMBOLS@
 
-/* Define if shared writing must be disabled (CodeWarrior only) */
-#cmakedefine H5_NO_SHARED_WRITING @H5_NO_SHARED_WRITING@
-
 /* Name of package */
 #define H5_PACKAGE "@HDF5_PACKAGE@"
 
diff --git a/configure b/configure
index 3590924891..c56bce8c0d 100755
--- a/configure
+++ b/configure
@@ -28340,16 +28340,6 @@ $as_echo "#define HAVE_FILTER_SCALEOFFSET 1" >>confdefs.h
   done
 fi
 
-## ----------------------------------------------------------------------
-## This is defined only when we're using CodeWarrior, since it has a
-## broken "open()" call.
-#
-if test 1 = 2; then
-
-$as_echo "#define NO_SHARED_WRITING 1" >>confdefs.h
-
-fi
-
 ## --------------------------------------------------------------------------
 ## Should the Default Virtual File Driver be compiled?
 ##
diff --git a/configure.ac b/configure.ac
index a17dec86b3..aff469fd6e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2531,15 +2531,6 @@ if test -n "$FILTERS"; then
   done
 fi
 
-## ----------------------------------------------------------------------
-## This is defined only when we're using CodeWarrior, since it has a
-## broken "open()" call.
-#
-if test 1 = 2; then
-  AC_DEFINE([NO_SHARED_WRITING], [1],
-            [Define if shared writing must be disabled (CodeWarrior only)])
-fi
-
 ## --------------------------------------------------------------------------
 ## Should the Default Virtual File Driver be compiled?
 ##
diff --git a/src/H5config.h.in b/src/H5config.h.in
index cc8a59c615..eb18a5ed0f 100644
--- a/src/H5config.h.in
+++ b/src/H5config.h.in
@@ -470,9 +470,6 @@
 /* Define if deprecated public API symbols are disabled */
 #undef NO_DEPRECATED_SYMBOLS
 
-/* Define if shared writing must be disabled (CodeWarrior only) */
-#undef NO_SHARED_WRITING
-
 /* Name of package */
 #undef PACKAGE
 
diff --git a/test/tfile.c b/test/tfile.c
index 4bef41cb0e..5de035a655 100644
--- a/test/tfile.c
+++ b/test/tfile.c
@@ -3652,9 +3652,7 @@ test_file(void)
 
     test_file_create();		/* Test file creation(also creation templates)*/
     test_file_open();		/* Test file opening */
-#ifndef H5_NO_SHARED_WRITING
     test_file_close();          /* Test file close behavior */
-#endif /* H5_NO_SHARED_WRITING */
     test_get_file_id();         /* Test H5Iget_file_id */
     test_get_obj_ids();         /* Test H5Fget_obj_ids for Jira Issue 8528 */
     test_file_perm();           /* Test file access permissions */
diff --git a/vms/src/h5pubconf.h b/vms/src/h5pubconf.h
index 6cb261287e..acb95c80b3 100644
--- a/vms/src/h5pubconf.h
+++ b/vms/src/h5pubconf.h
@@ -488,9 +488,6 @@
 /* Define if deprecated public API symbols are disabled */
 /* #undef H5_NO_DEPRECATED_SYMBOLS */
 
-/* Define if shared writing must be disabled (CodeWarrior only) */
-#define H5_NO_SHARED_WRITING 1
-
 /* Name of package */
 #define H5_PACKAGE "hdf5"