diff --git a/src/titiler/core/titiler/core/utils.py b/src/titiler/core/titiler/core/utils.py
index 0f7310ef8..4ace640a3 100644
--- a/src/titiler/core/titiler/core/utils.py
+++ b/src/titiler/core/titiler/core/utils.py
@@ -312,10 +312,18 @@ def update_openapi(app: FastAPI) -> FastAPI:
     OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     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
-    )
+    # Use a for-loop to traverse and locate the openapi route,
+    # which avoids creating a potentially expensive generator.
+    openapi_url = app.openapi_url
+    for route in app.router.routes:
+        if route.path == openapi_url:
+            openapi_route: Route = route
+            break
+    else:
+        # Defensive: This is not in original logic; keep behavior identical by using next(...) 
+        # if not found, next(...) would raise StopIteration, so we can raise the same for clarity.
+        raise StopIteration
+
     # Store the old endpoint function so we can call it from the patched function
     old_endpoint = openapi_route.endpoint
 
@@ -335,7 +343,6 @@ 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