diff --git a/Makefile b/Makefile
index a8e55635..afacd950 100644
--- a/Makefile
+++ b/Makefile
@@ -16,7 +16,7 @@ themes.json: $(wildcard static/*/config.json)
 publik-base-theme/static/includes/_data_uris.scss: $(wildcard publik-base-theme/static/includes/img/*)
 	cd publik-base-theme; python3 make_data_uris.py static/includes/
 
-css: publik-base-theme/static/includes/_data_uris.scss $(shell python get_themes.py)
+css: publik-base-theme/static/includes/_data_uris.scss $(shell python3 get_themes.py)
 	rm -rf static/*/.sass-cache/
 	for inode2 in  $(shell ls -d templates/variants/*/) ; do \
 		if [ -f $$inode2/prepare-template.py ]; then \
diff --git a/get_themes.py b/get_themes.py
index 0237762c..c99ea79e 100644
--- a/get_themes.py
+++ b/get_themes.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 import os