diff --git a/src/extension_class.cpp b/src/extension_class.cpp
index f8bcf9ad..cc784ca6 100644
--- a/src/extension_class.cpp
+++ b/src/extension_class.cpp
@@ -11,6 +11,7 @@
 
 #define BOOST_PYTHON_SOURCE
 
+#include <boost/python/detail/extension_class.hpp>
 #include <boost/python/detail/extension_class.hpp>
 #include <boost/python/detail/call_object.hpp>
 #include <boost/utility.hpp>
@@ -681,4 +682,9 @@ PyNumberMethods operator_dispatcher::number_methods =
 
 } // namespace detail
 
+# ifndef BOOST_PYTHON_NO_TEMPLATE_EXPORT
+template class BOOST_PYTHON_DECL meta_class<detail::extension_instance>;
+template class BOOST_PYTHON_DECL class_t<detail::extension_instance>;
+# endif
+
 }} // namespace boost::python