diff --git a/src/titiler/core/titiler/core/utils.py b/src/titiler/core/titiler/core/utils.py
index 0f7310ef8..61225e819 100644
--- a/src/titiler/core/titiler/core/utils.py
+++ b/src/titiler/core/titiler/core/utils.py
@@ -313,9 +313,15 @@ def update_openapi(app: FastAPI) -> FastAPI:
     SOFTWARE.
     """
     # Find the route for the openapi_url in the app
-    openapi_route: Route = next(
-        route for route in app.router.routes if route.path == app.openapi_url
-    )
+    openapi_route: Route | None = None
+    for route in app.router.routes:
+        if route.path == app.openapi_url:
+            openapi_route = route
+            break
+    
+    if openapi_route is None:
+        raise StopIteration()
+
     # Store the old endpoint function so we can call it from the patched function
     old_endpoint = openapi_route.endpoint
 
@@ -335,7 +341,6 @@ async def patched_openapi_endpoint(req: Request) -> Response:
     # our patched function and replace the existing app with it.
     openapi_route.app = request_response(patched_openapi_endpoint)
 
-    # return the patched app
     return app