diff --git a/test/unit/importHref.html b/test/unit/importHref.html
index fc28a0bfb6..63e7a5124a 100644
--- a/test/unit/importHref.html
+++ b/test/unit/importHref.html
@@ -49,7 +49,15 @@
       assert.ok(parsedEl.$.sub.$.test, 'sub element not upgraded when import loaded');
       done();
     });
-  })
+  });
+
+  test('load is triggered on second call', function(done) {
+    Polymer.Base.importHref('sub/x-test.html', function() {
+      Polymer.Base.importHref('sub/x-test.html', function() {
+        done();
+      });
+    });
+  });
 
 });