diff --git a/src/layouts/partial-map.js b/src/layouts/partial-map.js
index b8c2041246..26ad6acf6e 100644
--- a/src/layouts/partial-map.js
+++ b/src/layouts/partial-map.js
@@ -41,7 +41,7 @@ export default new Polymer({
       bindNuclear: [
         entityGetters.entityMap,
         entities => entities.valueSeq()
-          .filter(entity => entity.domain == 'zone').toArray(),
+          .filter(entity => entity.domain === 'zone').toArray(),
       ],
     },