diff --git a/include/collision_check.h b/include/collision_check.h
index f44b113eea..c897da6863 100644
--- a/include/collision_check.h
+++ b/include/collision_check.h
@@ -100,7 +100,7 @@ typedef struct ColliderElementDamageInfoAC {
 
 typedef struct ColliderElementDamageInfoACInit {
     /* 0x00 */ u32 dmgFlags; // Damage types that may affect this collider element as AC.
-    /* 0x04 */ u8 effect; // Damage Effect (Knockback, Fire, etc.)
+    /* 0x04 */ u8 hitBacklash; // The hit backlash type applied to any attacker hurting this AC collider.
     /* 0x05 */ u8 defense; // Damage Resistance
 } ColliderElementDamageInfoACInit; // size = 0x08
 
diff --git a/src/code/z_collision_check.c b/src/code/z_collision_check.c
index 7f8c27634c..771368e357 100644
--- a/src/code/z_collision_check.c
+++ b/src/code/z_collision_check.c
@@ -194,7 +194,7 @@ s32 Collider_DestroyElementDamageInfoAC(PlayState* play, ColliderElementDamageIn
 s32 Collider_SetElementDamageInfoAC(PlayState* play, ColliderElementDamageInfoAC* acDmgInfo,
                                     ColliderElementDamageInfoACInit* init) {
     acDmgInfo->dmgFlags = init->dmgFlags;
-    acDmgInfo->hitBacklash = init->effect;
+    acDmgInfo->hitBacklash = init->hitBacklash;
     acDmgInfo->defense = init->defense;
     return true;
 }