diff --git a/test/test_runner_battle.c b/test/test_runner_battle.c
index 3e0250ffd0..b95fe49774 100644
--- a/test/test_runner_battle.c
+++ b/test/test_runner_battle.c
@@ -2435,7 +2435,7 @@ void SendOut(u32 sourceLine, struct BattlePokemon *battler, u32 partyIndex)
     s32 i;
     s32 battlerId = battler - gBattleMons;
     INVALID_IF(DATA.turnState == TURN_CLOSED, "SEND_OUT outside TURN");
-    INVALID_IF(partyIndex >= ((battlerId & BIT_SIDE) == B_SIDE_PLAYER ? DATA.playerPartySize : DATA.opponentPartySize), "SWITCH to invalid party index");
+    INVALID_IF(partyIndex >= ((battlerId & BIT_SIDE) == B_SIDE_PLAYER ? DATA.playerPartySize : DATA.opponentPartySize), "SEND_OUT of invalid party index");
     INVALID_IF(IsAITest() && (battlerId & BIT_SIDE) == B_SIDE_OPPONENT, "SEND_OUT is not allowed for opponent in AI tests. Use EXPECT_SEND_OUT instead");
     for (i = 0; i < STATE->battlersCount; i++)
     {