diff --git a/src/common/common_funcs.h b/src/common/common_funcs.h
index 3f6df075a..67b3679b0 100644
--- a/src/common/common_funcs.h
+++ b/src/common/common_funcs.h
@@ -5,6 +5,7 @@
 #pragma once
 
 #include "common_types.h"
+#include <cstdlib>
 
 #ifdef _WIN32
 #define SLEEP(x) Sleep(x)