diff --git a/lib/activate/fs.c b/lib/activate/fs.c
index eeb6c11ef..5935391ce 100644
--- a/lib/activate/fs.c
+++ b/lib/activate/fs.c
@@ -313,7 +313,7 @@ struct fs_op_parms {
 	char *lv_name;
 	char *dev;
 	char *old_lv_name;
-	char names[0];
+	char names[];
 };
 
 static void _store_str(char **pos, char **ptr, const char *str)
diff --git a/libdm/libdm-common.c b/libdm/libdm-common.c
index 906922426..b512efd76 100644
--- a/libdm/libdm-common.c
+++ b/libdm/libdm-common.c
@@ -1443,7 +1443,7 @@ struct node_op_parms {
 	char *old_name;
 	int warn_if_udev_failed;
 	unsigned rely_on_udev;
-	char names[0];
+	char names[];
 };
 
 static void _store_str(char **pos, char **ptr, const char *str)