diff --git a/components/modals/product-modal.tsx b/components/modals/product-modal.tsx
index 94f4feb..047ea98 100644
--- a/components/modals/product-modal.tsx
+++ b/components/modals/product-modal.tsx
@@ -407,12 +407,13 @@ const UnitTypeSelect: React.FC<{
     <div className="flex items-center space-x-2">
       <Select
         value={value || "placeholder"}
-        onValueChange={(val) =>
+        onValueChange={(val) => {
+          if (val === "placeholder") return;
           setProductData((prev) => ({
             ...prev,
-            unitType: val === "placeholder" ? "" : val,
-          }))
-        }
+            unitType: val as 'pcs' | 'gr' | 'kg' | 'ml',
+          }));
+        }}
       >
         <SelectTrigger className="h-9 text-sm">
           <SelectValue placeholder="Select unit type" />