diff --git a/python/Makefile.am b/python/Makefile.am
index 6cefb6352b..ab15edc8a2 100644
--- a/python/Makefile.am
+++ b/python/Makefile.am
@@ -1,20 +1,20 @@
 #
 # Copyright 2023 the Pacemaker project contributors
 #
 # The version control history for this file may have further details.
 #
 # This source code is licensed under the GNU General Public License version 2
 # or later (GPLv2+) WITHOUT ANY WARRANTY.
 #
 
 MAINTAINERCLEANFILES    = Makefile.in
 
 EXTRA_DIST = pylintrc
 
 SUBDIRS	= pacemaker tests
 
 check-local:
-	$(PYTHON) -m unittest discover -v -s tests
+	PYTHONPATH=$(top_srcdir)/python:$(top_builddir)/python $(PYTHON) -m unittest discover -v -s $(top_srcdir)/python/tests $(top_builddir)/python/tests
 
 pylint:
 	pylint $(SUBDIRS)