diff --git a/lib/py/Makefile.am b/lib/py/Makefile.am
index 2cdbb24..b88b6be 100755
--- a/lib/py/Makefile.am
+++ b/lib/py/Makefile.am
@@ -19,7 +19,16 @@
 AUTOMAKE_OPTIONS = serial-tests
 DESTDIR ?= /
 
-all-local:
+if WITH_PY3
+py3-build:
+	$(PYTHON3) setup.py build
+else
+py3-build:
+endif
+
+testing:
+
+all-local: py3-build testing
 	$(PYTHON) setup.py build
 
 # We're ignoring prefix here because site-packages seems to be