diff --git a/dlls/ntdll/tests/file.c b/dlls/ntdll/tests/file.c
index 3d91cb1174d..5e7e1eed142 100644
--- a/dlls/ntdll/tests/file.c
+++ b/dlls/ntdll/tests/file.c
@@ -4435,6 +4435,15 @@ static void test_flush_buffers_file(void)
     ok(status == STATUS_INVALID_HANDLE, "expected STATUS_INVALID_HANDLE, got %#x.\n", status);
 
     CloseHandle(hfileread);
+    CloseHandle(hfile);
+    hfile = CreateFileA(buffer, FILE_APPEND_DATA, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
+            OPEN_EXISTING, 0, NULL);
+    ok(hfile != INVALID_HANDLE_VALUE, "could not open temp file, error %d.\n", GetLastError());
+
+    status = pNtFlushBuffersFile(hfile, &io_status_block);
+    todo_wine
+    ok(status == STATUS_SUCCESS, "expected STATUS_SUCCESS, got %#x.\n", status);
+
     CloseHandle(hfile);
     DeleteFileA(buffer);
 }