diff --git a/src/json.hpp b/src/json.hpp
index db3d13aa..920dd4d6 100644
--- a/src/json.hpp
+++ b/src/json.hpp
@@ -2422,7 +2422,7 @@ class basic_json
 	template<typename ReferenceType, typename ThisType>
     static ReferenceType get_ref_impl(ThisType& obj)
     {
-		using PointerType = std::add_pointer<ReferenceType>::type;
+		using PointerType = typename std::add_pointer<ReferenceType>::type;
         // delegate the call to get_ptr<>()
         auto ptr = obj.get_ptr<PointerType>();
 		if (ptr) return *ptr;
diff --git a/src/json.hpp.re2c b/src/json.hpp.re2c
index 474cb750..13f74993 100644
--- a/src/json.hpp.re2c
+++ b/src/json.hpp.re2c
@@ -2422,7 +2422,7 @@ class basic_json
 	template<typename ReferenceType, typename ThisType>
     static ReferenceType get_ref_impl(ThisType& obj)
     {
-		using PointerType = std::add_pointer<ReferenceType>::type;
+		using PointerType = typename std::add_pointer<ReferenceType>::type;
         // delegate the call to get_ptr<>()
         auto ptr = obj.get_ptr<PointerType>();
 		if (ptr) return *ptr;