#17315: unlink a file that test_posixpath was leaving around.
diff --git a/Lib/test/test_posixpath.py b/Lib/test/test_posixpath.py
index d9867a6..f74dc14 100644
--- a/Lib/test/test_posixpath.py
+++ b/Lib/test/test_posixpath.py
@@ -284,6 +284,7 @@
                 test_support.unlink(ABSTFN+"2")
                 test_support.unlink(ABSTFN+"y")
                 test_support.unlink(ABSTFN+"c")
+                test_support.unlink(ABSTFN+"a")
 
         def test_realpath_repeated_indirect_symlinks(self):
             # Issue #6975.