diff --git a/dist/weather-card-editor.js b/dist/weather-card-editor.js
index 73cab7a9..94301849 100644
--- a/dist/weather-card-editor.js
+++ b/dist/weather-card-editor.js
@@ -1,3 +1,12 @@
+const _customElementsDefine = window.customElements.define;
+window.customElements.define = (name, cl, conf) => {
+  if (!customElements.get(name)) {
+    _customElementsDefine.call(window.customElements, name, cl, conf);
+  } else {
+    console.warn(`${name} has been defined twice`);
+  }
+};
+
 if (!customElements.get("paper-input")) {
   console.log("imported", "paper-input");
   import("https://unpkg.com/@polymer/paper-input/paper-input.js?module");