diff --git a/lib/elements/array-selector.html b/lib/elements/array-selector.html
index 6325cc91c3..9e7ea69ade 100644
--- a/lib/elements/array-selector.html
+++ b/lib/elements/array-selector.html
@@ -199,13 +199,13 @@
           let sidx = 0;
           this.__selectedMap.forEach(idx => {
             if (idx >= 0) {
-              this.linkPaths(`${JSCompiler_renameProperty('items', this)}.` + idx, `${JSCompiler_renameProperty('selected', this)}.` + sidx++);
+              this.linkPaths(`${JSCompiler_renameProperty('items', this)}.${idx}`, `${JSCompiler_renameProperty('selected', this)}.${sidx++}`);
             }
           });
         } else {
           this.__selectedMap.forEach(idx => {
-            this.linkPaths(JSCompiler_renameProperty('selected', this), `${JSCompiler_renameProperty('items', this)}.` + idx);
-            this.linkPaths(JSCompiler_renameProperty('selectedItem', this), `${JSCompiler_renameProperty('items', this)}.` + idx);
+            this.linkPaths(JSCompiler_renameProperty('selected', this), `${JSCompiler_renameProperty('items', this)}.${idx}`);
+            this.linkPaths(JSCompiler_renameProperty('selectedItem', this), `${JSCompiler_renameProperty('items', this)}.${idx}`);
           });
         }
       }
@@ -260,7 +260,7 @@
       }
 
       __selectedIndexForItemIndex(idx) {
-        let selected = this.__dataLinkedPaths[`${JSCompiler_renameProperty('items', this)}.` + idx];
+        let selected = this.__dataLinkedPaths[`${JSCompiler_renameProperty('items', this)}.${idx}`];
         if (selected) {
           return parseInt(selected.slice(`${JSCompiler_renameProperty('selected', this)}.`.length), 10);
         }