diff --git a/reactos/base/applications/atactl/atactl.cpp b/reactos/base/applications/atactl/atactl.cpp
index b8137b64e80..9a0968babbc 100644
--- a/reactos/base/applications/atactl/atactl.cpp
+++ b/reactos/base/applications/atactl/atactl.cpp
@@ -1,5 +1,5 @@
 #include <windows.h>
-#include <WinIoCtl.h>
+#include <winioctl.h>
 #include <stdio.h>
 //#include <ntdddisk.h>
 //#include <ntddscsi.h>