diff --git a/Makefile b/Makefile
index fcfb4db848e1a4c44724086a7b91cab984fc531a_TWFrZWZpbGU=..9f3f79a209d668e226f52b90ce1029d4ee64dbba_TWFrZWZpbGU= 100644
--- a/Makefile
+++ b/Makefile
@@ -10,7 +10,7 @@
 	cd tests && $(PYTHON) run-tests.py --with-hg=`which hg` $(TESTFLAGS)
 
 test-%:
-	cd tests && $(PYTHON) run-tests.py $(TESTFLAGS) $@
+	cd tests && $(PYTHON) run-tests.py --with-hg=`which hg` $(TESTFLAGS) $@
 .PHONY: help all local build doc clean install install-bin install-doc \
 	install-home install-home-bin install-home-doc dist dist-notests tests \
 	update-pot