diff --git a/common/JackTools.cpp b/common/JackTools.cpp
index 57a770d0..9a38f4e9 100644
--- a/common/JackTools.cpp
+++ b/common/JackTools.cpp
@@ -19,6 +19,7 @@
 
 #include "JackTools.h"
 #include "JackError.h"
+#include <stdlib.h>
 
 namespace Jack
 {