diff --git a/src/proc/mobject/mobject-ref.hpp b/src/proc/mobject/mobject-ref.hpp
index 457fe8f31..5fdb9aec6 100644
--- a/src/proc/mobject/mobject-ref.hpp
+++ b/src/proc/mobject/mobject-ref.hpp
@@ -285,7 +285,7 @@ namespace mobject {
       isCompatible()  const
         {
           return pRef_
-              && (*pRef_).isCompatible<MOX>();
+              && (*pRef_).template isCompatible<MOX>();
         }
       
       operator string()   const                      ///////////////////////TICKET #527   should be better integrated with the other object types