diff --git a/reactos/base/system/services/services.h b/reactos/base/system/services/services.h
index 604e7e454d1..dde3d12c8f6 100644
--- a/reactos/base/system/services/services.h
+++ b/reactos/base/system/services/services.h
@@ -6,6 +6,7 @@
 #define _SERVICES_H
 
 #include <stdio.h>
+#include <stdlib.h>
 
 #define WIN32_NO_STATUS
 #define _INC_WINDOWS