--- telepathy-butterfly-0.5.1.ebuild
+++ telepathy-butterfly-0.5.1.ebuild
@@ -36,11 +36,9 @@
 }
 
 pkg_postinst() {
-	python_version
-	python_mod_optimize \
-		/usr/$(get_libdir)/python${PYVER}/site-packages/butterfly
+	python_mod_optimize $(python_get_sitedir)/butterfly
 }
 
 pkg_postrm() {
-	python_mod_cleanup
+	python_mod_cleanup $(python_get_sitedir)/butterfly
 }