diff --git a/python/extract.py b/python/extract.py
index 44f5fd8..7c0b334 100644
--- a/python/extract.py
+++ b/python/extract.py
@@ -20,7 +20,7 @@ def get_walls(model):
     i=1
     lst = []
     for wall in model.by_type("IfcWall"):
-        print(f"{i} {wall.Name}, container: {get_container(wall)} ")
+        print(f"{i}:{wall.Name},container:{get_container(wall)}")
         lst.append(wall)
         i+=1
     return lst