diff --git a/src/main/java/com/github/zly2006/carpetslsaddition/mixin/item/ItemInstanceMixin.java b/src/main/java/com/github/zly2006/carpetslsaddition/mixin/item/ItemInstanceMixin.java
index 5104a3e..e389256 100644
--- a/src/main/java/com/github/zly2006/carpetslsaddition/mixin/item/ItemInstanceMixin.java
+++ b/src/main/java/com/github/zly2006/carpetslsaddition/mixin/item/ItemInstanceMixin.java
@@ -29,7 +29,7 @@ public interface ItemInstanceMixin {
         if (!SLSCarpetSettings.stackableVehicles) {
             return;
         }
-        if (!(this instanceof ItemStack stack)) {
+        if (!((Object) this instanceof ItemStack stack)) {
             return;
         }
         Item item = stack.getItem();