diff --git a/src/overlays/actors/ovl_Bg_Zg/z_bg_zg.c b/src/overlays/actors/ovl_Bg_Zg/z_bg_zg.c
index eb70ada22f..95aee2317f 100644
--- a/src/overlays/actors/ovl_Bg_Zg/z_bg_zg.c
+++ b/src/overlays/actors/ovl_Bg_Zg/z_bg_zg.c
@@ -1,3 +1,9 @@
+/*
+ * File: z_bg_zg.c
+ * Overlay: ovl_Bg_Zg
+ * Description: Metal bars (Ganon's Castle)
+ */
+
 #include "z_bg_zg.h"
 
 #define ROOM 0x00