diff --git a/src/main/java/com/atsuishio/superbwarfare/item/M18SmokeGrenade.java b/src/main/java/com/atsuishio/superbwarfare/item/M18SmokeGrenade.java
index 57d91fcc4..1a123c672 100644
--- a/src/main/java/com/atsuishio/superbwarfare/item/M18SmokeGrenade.java
+++ b/src/main/java/com/atsuishio/superbwarfare/item/M18SmokeGrenade.java
@@ -35,7 +35,9 @@ public class M18SmokeGrenade extends Item implements ProjectileItem {
     }
 
     public void setColor(ItemStack stack, int color) {
-        NBTTool.getTag(stack).putInt(TAG_COLOR, color);
+        var tag = NBTTool.getTag(stack);
+        tag.putInt(TAG_COLOR, color);
+        NBTTool.saveTag(stack, tag);
     }
 
     public int getColor(ItemStack stack) {