diff --git a/makemake.py b/makemake.py
index 2e2f2db..03e9213 100644
--- a/makemake.py
+++ b/makemake.py
@@ -299,7 +299,7 @@
 
 # Build a recipy for $(_{dir}_BUILD)%%.py.bringup
 $(_{dir}_BUILD)%%.py.mk: $(_{dir})%%.py
-	( cd $(_{dir}_DIR) && python3 $*.py --generic --dep $(__{dir}_BUILD)$*.py.mk ) ; \\
+	( cd $(_{dir}_DIR) && PYTHONPATH=$(_{dir}_DIR) python3 $*.py --generic --dep $(__{dir}_BUILD)$*.py.mk ) ; \\
 	if [ ! -f $@ ]; then echo "\\$$(_{dir}_BUILD)$*.py.bringup:; touch \\$$@" >$@; fi
 
 # Check Python and command line usage examples in .py files