diff --git a/src/lib/template/templatizer.html b/src/lib/template/templatizer.html
index 0b6cf5d397..19548d1c97 100644
--- a/src/lib/template/templatizer.html
+++ b/src/lib/template/templatizer.html
@@ -330,7 +330,7 @@
       // Call extension point for Templatizer sub-classes
       dataHost._forwardInstancePath.call(dataHost, this, path, value);
       if (root in dataHost._parentProps) {
-        dataHost._templatized.notifyPath(dataHost._parentPropPrefix + path, value);
+        dataHost._templatized._notifyPath(dataHost._parentPropPrefix + path, value);
       }
     },