diff --git a/fs/btrfs/delayed-ref.h b/fs/btrfs/delayed-ref.h
index 8316bff..a5fb2bc 100644
--- a/fs/btrfs/delayed-ref.h
+++ b/fs/btrfs/delayed-ref.h
@@ -98,19 +98,15 @@
 
 struct btrfs_delayed_tree_ref {
 	struct btrfs_delayed_ref_node node;
-	union {
-		u64 root;
-		u64 parent;
-	};
+	u64 root;
+	u64 parent;
 	int level;
 };
 
 struct btrfs_delayed_data_ref {
 	struct btrfs_delayed_ref_node node;
-	union {
-		u64 root;
-		u64 parent;
-	};
+	u64 root;
+	u64 parent;
 	u64 objectid;
 	u64 offset;
 };