diff --git a/engine/battle/core.asm b/engine/battle/core.asm
index e1c5f331f..189ebf195 100644
--- a/engine/battle/core.asm
+++ b/engine/battle/core.asm
@@ -8394,6 +8394,7 @@ InitEnemyTrainer: ; 3f594
 	callfar GetTrainerAttributes
 	callfar ReadTrainerParty
 
+	; RIVAL1's first mon has no held item
 	ld a, [TrainerClass]
 	cp RIVAL1
 	jr nz, .ok