diff --git a/src/battle_ai_main.c b/src/battle_ai_main.c
index 1960088640..2cc7cfe62c 100644
--- a/src/battle_ai_main.c
+++ b/src/battle_ai_main.c
@@ -5116,6 +5116,7 @@ case EFFECT_GUARD_SPLIT:
             ADJUST_AND_RETURN_SCORE(GOOD_EFFECT);
 
         ADJUST_SCORE(WORST_EFFECT);
+        break;
     }
     case EFFECT_ELECTRIC_TERRAIN:
         if (ShouldSetFieldStatus(battlerAtk, STATUS_FIELD_ELECTRIC_TERRAIN))