diff --git a/semantik.spec b/semantik.spec
index 39d75a3..89e1ee6 100644
--- a/semantik.spec
+++ b/semantik.spec
@@ -59,7 +59,7 @@ to create general-purpose documents through the use of mindmaps.
 convert -strip src/data/hi48-app-semantik-d.png -resize 48x48 src/data/hi48-app-semantik-d.png
 #env-script-interpreter
 for i in src/filters/*.py src/sembind.py waf; do
-  sed -i '1s:.*:#!/usr/bin/python:' $i;
+  sed -i '1s:.*:#!/usr/bin/python3:' $i;
 done
 
 %build