diff --git a/client-mod/src/main/java/net/momirealms/craftengine/fabric/mixin/BlockItemMixin.java b/client-mod/src/main/java/net/momirealms/craftengine/fabric/mixin/BlockItemMixin.java
index ba4c89546..fe3d3a6a8 100644
--- a/client-mod/src/main/java/net/momirealms/craftengine/fabric/mixin/BlockItemMixin.java
+++ b/client-mod/src/main/java/net/momirealms/craftengine/fabric/mixin/BlockItemMixin.java
@@ -1,5 +1,7 @@
 package net.momirealms.craftengine.fabric.mixin;
 
+import net.fabricmc.api.EnvType;
+import net.fabricmc.api.Environment;
 import net.minecraft.component.DataComponentTypes;
 import net.minecraft.component.type.NbtComponent;
 import net.minecraft.item.BlockItem;
@@ -11,6 +13,7 @@ import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
+@Environment(EnvType.CLIENT)
 @Mixin(BlockItem.class)
 public class BlockItemMixin {
 
diff --git a/client-mod/src/main/resources/craftengine.mixins.json b/client-mod/src/main/resources/craftengine.mixins.json
index be9dbe408..d177f9a82 100644
--- a/client-mod/src/main/resources/craftengine.mixins.json
+++ b/client-mod/src/main/resources/craftengine.mixins.json
@@ -2,7 +2,7 @@
   "required": true,
   "package": "net.momirealms.craftengine.fabric.mixin",
   "compatibilityLevel": "JAVA_21",
-  "mixins": [
+  "client": [
     "AbstractBlockStateMixin",
     "AbstractRailBlockMixin",
     "BlockItemMixin",