diff --git a/src/testdir/test_diffmode.vim b/src/testdir/test_diffmode.vim
index e5d9ff9..39376bd 100644
--- a/src/testdir/test_diffmode.vim
+++ b/src/testdir/test_diffmode.vim
@@ -145,6 +145,8 @@
   call assert_equal(0, &cursorbind)
   call assert_equal(1, &wrap)
 
+  call delete('Xtest')
+  call delete('Xtest2')
   windo bw!
 endfunc