diff --git a/elements/x-binding/x-binding.html b/elements/x-binding/x-binding.html
index a030eed4..169b4e59 100644
--- a/elements/x-binding/x-binding.html
+++ b/elements/x-binding/x-binding.html
@@ -13,6 +13,7 @@
       if (element && element.bindings_) {
         var binding = element.bindings_[name];
         if (binding) {
+          binding = binding.observable_ || binding;
           return binding.path || binding.path_;
         }
       }