diff --git a/include/battle.h b/include/battle.h
index 38e14b734..b56b381e7 100644
--- a/include/battle.h
+++ b/include/battle.h
@@ -615,7 +615,7 @@ struct BattleStruct
     u8 quickClawBattlerId;
     struct StolenItem itemStolen[PARTY_SIZE];  // Player's team that had items stolen (two bytes per party member)
     u8 blunderPolicy:1; // should blunder policy activate
-    u8 swapDamageCategory:1;
+    u8 swapDamageCategory:1; // Photon Geyser, Shell Side Arm, Light That Burns the Sky
     u8 ballSpriteIds[2];    // item gfx, window gfx
     u8 stickyWebUser;
     u8 appearedInBattle; // Bitfield to track which Pokemon appeared in battle. Used for Burmy's form change