diff --git a/glm/core/func_trigonometric.inl b/glm/core/func_trigonometric.inl
index c5d7b4fc..5f8a0055 100644
--- a/glm/core/func_trigonometric.inl
+++ b/glm/core/func_trigonometric.inl
@@ -26,7 +26,7 @@
 /// @author Christophe Riccio
 ///////////////////////////////////////////////////////////////////////////////////
 
-#include "./core/_vectorize.hpp"
+#include "_vectorize.hpp"
 
 namespace glm
 {
diff --git a/test/core/core_func_common.cpp b/test/core/core_func_common.cpp
index 05f7dafd..385ae2ea 100644
--- a/test/core/core_func_common.cpp
+++ b/test/core/core_func_common.cpp
@@ -14,6 +14,7 @@
 #include <glm/gtc/constants.hpp>
 #include <glm/gtc/epsilon.hpp>
 #include <cstdio>
+#include <cmath>
 
 int test_modf()
 {
@@ -338,6 +339,23 @@ int test_round()
 		Error += F == 2.0f ? 0 : 1;
 		float G = glm::round(1.9f);
 		Error += G == 2.0f ? 0 : 1;
+
+#if GLM_LANG >= GLM_LANG_CXX11
+		float A1 = std::round(0.0f);
+		Error += A1 == A ? 0 : 1;
+		float B1 = std::round(0.5f);
+		Error += B1 == B ? 0 : 1;
+		float C1 = std::round(1.0f);
+		Error += C1 == C ? 0 : 1;
+		float D1 = std::round(0.1f);
+		Error += D1 == D ? 0 : 1;
+		float E1 = std::round(0.9f);
+		Error += E1 == E ? 0 : 1;
+		float F1 = std::round(1.5f);
+		Error += F == F ? 0 : 1;
+		float G1 = std::round(1.9f);
+		Error += G1 == G ? 0 : 1;
+#endif // GLM_LANG >= GLM_CXX0X
 	}
 	
 	{