diff --git a/data/lang/py/Makefile b/data/lang/py/Makefile
index fa113b8a..e9df9efa 100644
--- a/data/lang/py/Makefile
+++ b/data/lang/py/Makefile
@@ -1,6 +1,8 @@
 # This is a self-deleting Makefile. On success, only the .so file remains.
 
+PYTHON=python3
+
 all:
-	python setup.py build_ext --inplace
+	${PYTHON} setup.py build_ext --inplace
 	cp -fs pymorloc.cpython* pymorloc
-	rm -rf build pymorloc.c setup.py Makefile
+	rm -rf build pymorloc.c setup.py makefile