diff --git a/unsupported/test/cxx11_tensor_notification.cpp b/unsupported/test/cxx11_tensor_notification.cpp
index 961d4edf6..813bc4413 100644
--- a/unsupported/test/cxx11_tensor_notification.cpp
+++ b/unsupported/test/cxx11_tensor_notification.cpp
@@ -10,7 +10,7 @@
 #define EIGEN_USE_THREADS
 
 #include <unistd.h>
-#include <malloc.h>
+#include <stdlib.h>
 #include "main.h"
 #include <Eigen/CXX11/Tensor>