diff --git a/src/behaviors/ParameterValuePicker.tsx b/src/behaviors/ParameterValuePicker.tsx
index ca0aaae..f5c626e 100644
--- a/src/behaviors/ParameterValuePicker.tsx
+++ b/src/behaviors/ParameterValuePicker.tsx
@@ -24,8 +24,10 @@ export const ParameterValuePicker = ({
           className="h-8 rounded"
           onChange={(e) => onValueChanged(parseInt(e.target.value))}
         >
-          {values.map((v) => (
-            <option value={v.constant}>{v.name}</option>
+          {values.map((v, i) => (
+            <option key={i} value={v.constant}>
+              {v.name}
+            </option>
           ))}
         </select>
       </div>
@@ -66,7 +68,9 @@ export const ParameterValuePicker = ({
             onChange={(e) => onValueChanged(parseInt(e.target.value))}
           >
             {layers.map(({ name, id }) => (
-              <option value={id}>{name}</option>
+              <option key={id} value={id}>
+                {name}
+              </option>
             ))}
           </select>
         </div>