diff --git a/reactos/lib/fslib/vfatlib/vfatlib.c b/reactos/lib/fslib/vfatlib/vfatlib.c
index 306940b39e2..c2cef5879c7 100644
--- a/reactos/lib/fslib/vfatlib/vfatlib.c
+++ b/reactos/lib/fslib/vfatlib/vfatlib.c
@@ -49,7 +49,7 @@ VfatFormat(IN PUNICODE_STRING DriveRoot,
                                NULL);
 
     Status = NtOpenFile(&FileHandle,
-                        FILE_GENERIC_READ | FILE_GENERIC_WRITE,
+                        FILE_GENERIC_READ | FILE_GENERIC_WRITE | SYNCHRONIZE,
                         &ObjectAttributes,
                         &Iosb,
                         FILE_SHARE_READ,