diff --git a/mupifDB/test_scheduler.py b/mupifDB/test_scheduler.py
index ce2f494..ed2f545 100644
--- a/mupifDB/test_scheduler.py
+++ b/mupifDB/test_scheduler.py
@@ -80,7 +80,7 @@ def scheduler(xprocess,restApi):
     class Starter(ProcessStarter):
         env = {
             'PYTHONUNBUFFERED':'1',
-            'PYTHONPATH':mupifDB.__path__[0]+':'+:mupifDB.__path__[0]+'/..',
+            'PYTHONPATH':mupifDB.__path__[0]+':'+mupifDB.__path__[0]+'/..',
             'MUPIF_NS':f'localhost:'+PORTS['nameserver'],
             'MUPIF_LOG_LEVEL':'DEBUG',
             'MUPIFDB_REST_SERVER':'http://localhost:'+PORTS['restApi'],