diff --git a/loader/task.c b/loader/task.c
index 0f0e0d4..3bb95ad 100644
--- a/loader/task.c
+++ b/loader/task.c
@@ -9,7 +9,7 @@
 #include <assert.h>
 #include <unistd.h>
 
-#include "windows.h"
+#include "wine/winbase16.h"
 #include "user.h"
 #include "callback.h"
 #include "drive.h"