diff --git a/test/unit/behaviors-elements.html b/test/unit/behaviors-elements.html
index 6e99d45780..fcfe49697e 100644
--- a/test/unit/behaviors-elements.html
+++ b/test/unit/behaviors-elements.html
@@ -217,4 +217,28 @@
 
   </script>
 
+</dom-module>
+
+<dom-module id="registration-behaviors">
+
+  <script>
+
+    Polymer.registerBehavior ={
+      registered: function() {
+        this.is = this.as;
+      }
+    };
+
+    Polymer({
+
+      behaviors: [
+        Polymer.registerBehavior
+      ],
+
+      as: 'behavior-as-is'
+
+    });
+
+  </script>
+
 </dom-module>
\ No newline at end of file
diff --git a/test/unit/behaviors.html b/test/unit/behaviors.html
index 72c97c2b16..8702551a6d 100644
--- a/test/unit/behaviors.html
+++ b/test/unit/behaviors.html
@@ -52,6 +52,11 @@
     assert.equal(typeof el._setHasOptionsA, 'function');
   });
 
+  test('registered behavior', function() {
+    var el = document.createElement('behavior-as-is');
+    assert.equal(el.is, 'behavior-as-is');
+  });
+
 });
 
 suite('multi-behaviors element', function() {