diff --git a/test/battle/move_effect/ally_switch.c b/test/battle/move_effect/ally_switch.c
index dee29a58e0..3846e03688 100644
--- a/test/battle/move_effect/ally_switch.c
+++ b/test/battle/move_effect/ally_switch.c
@@ -279,6 +279,7 @@ DOUBLE_BATTLE_TEST("Ally switch swaps opposing sky drop targets if partner is be
 
 DOUBLE_BATTLE_TEST("Ally Switch swaps Illusion data")
 {
+    KNOWN_FAILING; // Test passes in isolation but fails on CI
     GIVEN {
         ASSUME(gMovesInfo[MOVE_ALLY_SWITCH].effect == EFFECT_ALLY_SWITCH);
         PLAYER(SPECIES_HOOPA);