diff --git a/loader/win32.c b/loader/win32.c
index 5bdeb789a6..09bd300edc 100644
--- a/loader/win32.c
+++ b/loader/win32.c
@@ -3560,7 +3560,7 @@ static HANDLE WINAPI expCreateFileA(LPCSTR cs1,DWORD i1,DWORD i2,
     if (strstr(cs1, "WINNOV.bmp"))
     {
 	int r;
-	r=open("/dev/null", 0);
+	r=open("/dev/null", O_RDONLY);
 	return r;
     }