1 files changed, 6 insertions, 0 deletions
diff --git a/npc/craft/tweak.txt b/npc/craft/tweak.txt
index 4110bd3a1..ef1614e3d 100644
--- a/npc/craft/tweak.txt
+++ b/npc/craft/tweak.txt
@@ -72,6 +72,12 @@ function	script	SmithTweakSystem	{
         return false;
     }
 
+    // No duplicates
+    if (countitem(.@x) > 1) {
+        mesc l("You are carrying duplicates of the same item. Sorry, but I have no idea which one you want to tweak."), 1;
+        return false;
+    }
+
     // Take the money and AP away
 	POL_PlayerMoney(.@price);
     SMITH_TWEAKS+=1;