diff --git a/swh/web/browse/views/origin.py b/swh/web/browse/views/origin.py
--- a/swh/web/browse/views/origin.py
+++ b/swh/web/browse/views/origin.py
@@ -23,7 +23,7 @@
     # Send all the url_args and the request_args as query params
     # eg /origin/<url:url-val>/log?path=test
     # will be send as /log?url=<url-val>&path=test
-    args = {**request_path.kwargs, **{k: v for k, v in request.GET.items()}}
+    args = {**request_path.kwargs, **request.GET.dict()}
     return redirect(reverse(new_route, query_params=args), permanent=True,)
 
 
diff --git a/swh/web/tests/browse/views/test_origin.py b/swh/web/tests/browse/views/test_origin.py
--- a/swh/web/tests/browse/views/test_origin.py
+++ b/swh/web/tests/browse/views/test_origin.py
@@ -827,15 +827,23 @@
 @given(new_origin())
 @pytest.mark.parametrize("browse_context", ["log", "branches", "releases"])
 def test_origin_view_legacy_redirects(client, browse_context, new_origin):
-    params = {"origin_url": new_origin.url, "timestamp": "2021-01-23T22:24:10Z"}
-    url = reverse(
-        f"browse-origin-{browse_context}-legacy", url_args=params, query_params=params
-    )
+    # Each legacy route corresponds to two URL patterns, testing both
+    url_args = [
+        {"origin_url": new_origin.url},
+        {"origin_url": new_origin.url, "timestamp": "2021-01-23T22:24:10Z"},
+    ]
+    params = {"extra-param1": "extra-param1", "extra-param2": "extra-param2"}
+    for each_arg in url_args:
+        url = reverse(
+            f"browse-origin-{browse_context}-legacy",
+            url_args=each_arg,
+            query_params=params,
+        )
 
-    resp = check_html_get_response(client, url, status_code=301)
-    assert resp["location"] == reverse(
-        f"browse-snapshot-{browse_context}", query_params=params
-    )
+        resp = check_html_get_response(client, url, status_code=301)
+        assert resp["location"] == reverse(
+            f"browse-snapshot-{browse_context}", query_params={**each_arg, **params}
+        )
 
 
 def _origin_content_view_test_helper(