diff --git a/sys/sys/extattr.h b/sys/sys/extattr.h
index 4aabb4af667..91bc5210a54 100644
--- a/sys/sys/extattr.h
+++ b/sys/sys/extattr.h
@@ -53,9 +53,9 @@
  * char *extattr_namespace_names[] = EXTATTR_NAMESPACE_NAMES;
  */
 #define EXTATTR_NAMESPACE_NAMES { \
-	EXTATTR_NAMESPACE_EMPTY_STRING, \
-	EXTATTR_NAMESPACE_USER_STRING, \
-	EXTATTR_NAMESPACE_SYSTEM_STRING }
+	[EXTATTR_NAMESPACE_EMPTY] = EXTATTR_NAMESPACE_EMPTY_STRING, \
+	[EXTATTR_NAMESPACE_USER] = EXTATTR_NAMESPACE_USER_STRING, \
+	[EXTATTR_NAMESPACE_SYSTEM] = EXTATTR_NAMESPACE_SYSTEM_STRING }
 
 #define	EXTATTR_MAXNAMELEN	NAME_MAX