diff --git a/gradio/routes.py b/gradio/routes.py
index 263f1d70ed51..09e899758c23 100644
--- a/gradio/routes.py
+++ b/gradio/routes.py
@@ -217,7 +217,7 @@ def app_id(request: fastapi.Request) -> dict:
         @app.post("/login")
         @app.post("/login/")
         def login(form_data: OAuth2PasswordRequestForm = Depends()):
-            username, password = form_data.username, form_data.password
+            username, password = form_data.username.strip(), form_data.password
             if app.auth is None:
                 return RedirectResponse(url="/", status_code=status.HTTP_302_FOUND)
             if (
diff --git a/test/test_routes.py b/test/test_routes.py
index 42a5951ce6d1..4db29d247644 100644
--- a/test/test_routes.py
+++ b/test/test_routes.py
@@ -473,6 +473,22 @@ def test_post_login(self):
         )
         assert response.status_code == 400
 
+    def test_login_strip_username(self):
+        io = Interface(lambda x: x, "text", "text")
+        app, _, _ = io.launch(
+            auth=("test", "correct_password"),
+            prevent_thread_lock=True,
+            enable_queue=False,
+        )
+        client = TestClient(app)
+
+        response = client.post(
+            "/login",
+            data={"username": "  test  ", "password": "correct_password"},
+        )
+        assert response.status_code == 200
+        assert app.tokens[response.json()["access-token"]] == "test"
+
 
 class TestQueueRoutes:
     @pytest.mark.asyncio