diff --git a/src/c3nav/mapdata/utils/locations.py b/src/c3nav/mapdata/utils/locations.py
index 90995a1f..a76d9a02 100644
--- a/src/c3nav/mapdata/utils/locations.py
+++ b/src/c3nav/mapdata/utils/locations.py
@@ -457,3 +457,10 @@ class CustomLocation:
 
     def get_icon(self):
         return self.icon
+
+    def get_slug(self):
+        return self.pk
+
+    @cached_property
+    def slug(self):
+        return self.pk