diff --git a/create-nginx-map.py b/create-nginx-map.py
index e5eabec..726864a 100644
--- a/create-nginx-map.py
+++ b/create-nginx-map.py
@@ -83,8 +83,13 @@ def main():
             case "dokku":
                 routes.extend(get_dokku_routes(source["url"], source["destination"]))
 
+    if len(routes) != len(set(routes)):
+        raise ValueError("Conflict found!")
+
     for route in sorted(routes, key=operator.attrgetter("hostname")):
         print(f"{route.hostname}\t{route.destination};  # {route.name}")
 
+    print("Found", len(routes), "routes")
+
 if __name__ == "__main__":
     main()