diff --git a/src/battle_util.c b/src/battle_util.c
index 8de0bd5a29..d01b55e2b6 100644
--- a/src/battle_util.c
+++ b/src/battle_util.c
@@ -1893,7 +1893,7 @@ u8 TrySetCantSelectMoveBattleScript(void)
         }
     }
     if ((GetBattlerAbility(gActiveBattler) == ABILITY_GORILLA_TACTICS) && *choicedMove != MOVE_NONE
-              && *choicedMove != 0xFFFF && *choicedMove != move)
+              && *choicedMove != MOVE_UNAVAILABLE && *choicedMove != move)
     {
         gCurrentMove = *choicedMove;
         gLastUsedItem = gBattleMons[gActiveBattler].item;
@@ -1977,7 +1977,7 @@ u8 CheckMoveLimitations(u8 battlerId, u8 unusableMoves, u8 check)
         else if (gBattleMons[battlerId].moves[i] == MOVE_STUFF_CHEEKS && ItemId_GetPocket(gBattleMons[gActiveBattler].item) != POCKET_BERRIES)
             unusableMoves |= gBitTable[i];
         // Gorilla Tactics
-        else if (GetBattlerAbility(battlerId) == ABILITY_GORILLA_TACTICS && *choicedMove != MOVE_NONE && *choicedMove != 0xFFFF && *choicedMove != gBattleMons[battlerId].moves[i])
+        else if (GetBattlerAbility(battlerId) == ABILITY_GORILLA_TACTICS && *choicedMove != MOVE_NONE && *choicedMove != MOVE_UNAVAILABLE && *choicedMove != gBattleMons[battlerId].moves[i])
             unusableMoves |= gBitTable[i];
     }
     return unusableMoves;