diff --git a/run_page/generator/__init__.py b/run_page/generator/__init__.py
index 3ed84ae4bfa..3a504e17a6e 100644
--- a/run_page/generator/__init__.py
+++ b/run_page/generator/__init__.py
@@ -64,7 +64,10 @@ def sync(self, force):
             if self.only_run and activity.type != "Run":
                 continue
             if IGNORE_BEFORE_SAVING:
-                activity.summary_polyline = filter_out(activity.summary_polyline)
+                if activity.map and activity.map.summary_polyline:
+                    activity.map.summary_polyline = filter_out(
+                        activity.map.summary_polyline
+                    )
             created = update_or_create_activity(self.session, activity)
             if created:
                 sys.stdout.write("+")