diff --git a/demo/vertical/define_ontology.py b/demo/vertical/define_ontology.py
index a4fb532fe..d13acbbc1 100755
--- a/demo/vertical/define_ontology.py
+++ b/demo/vertical/define_ontology.py
@@ -39,7 +39,9 @@
 
 # Load EMMO
 world = World(filename="demo.sqlite3")
-emmo = world.get_ontology("http://emmo.info/emmo/1.0.0-alpha2")
+emmo = world.get_ontology(
+    "https://raw.githubusercontent.com/emmo-repo/EMMO/master/emmo.ttl"
+)
 emmo.load()
 # emmo.sync_reasoner()