diff --git a/mocha-common/yaml2mcl b/mocha-common/yaml2mcl
index 0055a17..ea1776a 100755
--- a/mocha-common/yaml2mcl
+++ b/mocha-common/yaml2mcl
@@ -1,4 +1,5 @@
 #!/bin/bash
 
+export PYTHONPATH=".;../editor-python/editor-python/src;../framework-python/lib/mbs"
 python3 compilers/yaml2mcl/Program.py ${1+"$@"}