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-rw-r--r--grp/grp.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/grp/grp.h b/grp/grp.h
index 45cb6de664..ae921bb876 100644
--- a/grp/grp.h
+++ b/grp/grp.h
@@ -34,9 +34,9 @@ __BEGIN_DECLS
 
 
 /* For the Single Unix specification we must define this type here.  */
-#if defined __USE_XOPEN && !defined gid_t
+#if defined __USE_XOPEN && !defined __gid_t_defined
 typedef __gid_t gid_t;
-# define gid_t gid_t
+# define __gid_t_defined
 #endif
 
 /* The group structure.	 */