diff --git a/include/sys/ipc.h b/include/sys/ipc.h
index 9ac11fe3ec3274c6592427bc8f1025ca4ab1f554..f4cb9ac6942ce3fef781b67618be4d0dfbdfa67f 100644
--- a/include/sys/ipc.h
+++ b/include/sys/ipc.h
@@ -13,12 +13,8 @@ extern "C" {
 
 #include <bits/alltypes.h>
 
-#ifdef _GNU_SOURCE
-#define key __ipc_perm_key
-#define seq __ipc_perm_seq
-#define __key __ipc_perm_key
-#define __seq __ipc_perm_seq
-#endif
+#define __ipc_perm_key __key
+#define __ipc_perm_seq __seq
 
 #include <bits/ipc.h>