diff --git a/frontend/src/stopsSearchMenu/map.tsx b/frontend/src/stopsSearchMenu/map.tsx
index e20b5cb..7293ef1 100644
--- a/frontend/src/stopsSearchMenu/map.tsx
+++ b/frontend/src/stopsSearchMenu/map.tsx
@@ -116,7 +116,9 @@ export const Map: ParentComponent<{}> = () => {
 		const foundStopIds = new Set();
 		for (const foundStop of stops) {
 			foundStopIds.add(foundStop.id);
-			foundStop.stops.forEach(s => foundStopIds.add(s.id));
+			if (foundStop.stops !== undefined) {
+				foundStop.stops.forEach(s => foundStopIds.add(s.id));
+			}
 		}
 
 		for (const [stopIdStr, feature] of Object.entries(displayedFeatures)) {