diff --git a/glm/gtx/io.hpp b/glm/gtx/io.hpp
index dcb706af..a52ab9c0 100644
--- a/glm/gtx/io.hpp
+++ b/glm/gtx/io.hpp
@@ -224,7 +224,7 @@ namespace glm
 	GLM_FUNC_DECL std::basic_ostream<CTy,CTr> & operator<<(
 		std::basic_ostream<CTy,CTr> &,
 		std::pair<tmat4x4<T,P>,
-		tmat4x4<T,P>> const &);
+		tmat4x4<T,P> > const &);
 
 	/// @}
 }//namespace glm
diff --git a/glm/gtx/io.inl b/glm/gtx/io.inl
index 38202485..92c68732 100644
--- a/glm/gtx/io.inl
+++ b/glm/gtx/io.inl
@@ -649,7 +649,7 @@ namespace io
 	template <typename CTy, typename CTr, typename T, precision P>
 	GLM_FUNC_QUALIFIER std::basic_ostream<CTy,CTr>& operator<<(
 		std::basic_ostream<CTy,CTr> & os,
-		std::pair<tmat4x4<T,P>, tmat4x4<T,P>> const& a)
+		std::pair<tmat4x4<T,P>, tmat4x4<T,P> > const& a)
 	{
 		return operator<<(os, static_cast<std::pair<tmat4x4<T,P> const, tmat4x4<T,P> const> const&>(a));
 	}