diff --git a/lib/mixins/element-mixin.js b/lib/mixins/element-mixin.js
index e37f066609..f5e695c813 100644
--- a/lib/mixins/element-mixin.js
+++ b/lib/mixins/element-mixin.js
@@ -219,7 +219,7 @@ export const ElementMixin = dedupingMixin(base => {
     // dependencies rather than itself.
     if (info.computed) {
       if (proto._hasReadOnlyEffect(name)) {
-        console.warn(`Cannot redefine computed property '${name}'.`)
+        console.warn(`Cannot redefine computed property '${name}'.`);
       } else {
         proto._createComputedProperty(name, info.computed, allProps);
       }