diff --git a/src/testdir/test_source.vim b/src/testdir/test_source.vim
index 5166baf..09baec0 100644
--- a/src/testdir/test_source.vim
+++ b/src/testdir/test_source.vim
@@ -44,4 +44,5 @@
   call assert_equal('hello', getline(1))
   call assert_fails('sandbox source! Xsourcehello', 'E48:')
   bwipe!
+  call delete('Xsourcehello')
 endfunc