diff --git a/lib/py/Makefile.am b/lib/py/Makefile.am
index 27d1115..24c5892 100644
--- a/lib/py/Makefile.am
+++ b/lib/py/Makefile.am
@@ -1,4 +1,8 @@
 DESTDIR ?= /
 
+# We're ignoring prefix here because site-packages seems to be
+# the equivalent of /usr/local/lib in Python land.
+# Old version (can't put inline because it's not portable).
+#$(PYTHON) setup.py install --prefix=$(prefix) --root=$(DESTDIR) $(PYTHON_SETUPUTIL_ARGS)
 install-exec-hook:
-	$(PYTHON) setup.py install --prefix=$(prefix) --root=$(DESTDIR) $(PYTHON_SETUPUTIL_ARGS)
+	$(PYTHON) setup.py install --root=$(DESTDIR) $(PYTHON_SETUPUTIL_ARGS)