diff --git a/tests/test-run-tests.t b/tests/test-run-tests.t
--- a/tests/test-run-tests.t
+++ b/tests/test-run-tests.t
@@ -23,7 +23,7 @@
 #if symlink
   $ ln -s `which true` hg
   $ "$PYTHON" $TESTDIR/run-tests.py --with-hg=./hg
-  warning: --with-hg should specify an hg script, not: true
+  ^warning: --with-hg should specify an hg script, not: (true|coreutils)$ (re)
   running 0 tests using 0 parallel processes 
   
   # Ran 0 tests, 0 skipped, 0 failed.