diff --git a/src/c3nav/routing/route.py b/src/c3nav/routing/route.py
index e70417db..80e128cc 100644
--- a/src/c3nav/routing/route.py
+++ b/src/c3nav/routing/route.py
@@ -98,7 +98,7 @@ class Route:
                     if description is None:
                         description = current_space.leave_descriptions.get(next_space.pk, None)
                     if description is None:
-                        description = item.space.enter_description or None
+                        description = str(item.space.enter_description) or None
                     if description is None:
                         description =  _('Go to %(space_title)s.') % {'space_title': item.space.title}