diff --git a/include/cereal/details/polymorphic_impl.hpp b/include/cereal/details/polymorphic_impl.hpp
index 08d6f3c25..32daa44c1 100644
--- a/include/cereal/details/polymorphic_impl.hpp
+++ b/include/cereal/details/polymorphic_impl.hpp
@@ -261,7 +261,7 @@ namespace cereal
 
             writeMetadata(ar);
 
-            savePolymorphicSharedPtr( ar, dptr, typename ::cereal::traits::has_shared_from_this<T>::type() );
+            savePolymorphicSharedPtr( ar, dptr, ::cereal::traits::has_shared_from_this<T>::type() );
           };
 
         serializers.unique_ptr =