diff --git a/test/mv_web/member_live/index_groups_filter_test.exs b/test/mv_web/member_live/index_groups_filter_test.exs
index 782ab33..d32b17f 100644
--- a/test/mv_web/member_live/index_groups_filter_test.exs
+++ b/test/mv_web/member_live/index_groups_filter_test.exs
@@ -70,7 +70,9 @@ defmodule MvWeb.MemberLive.IndexGroupsFilterTest do
 
     # Force LiveView to process {:group_filter_changed, ...} (render triggers mailbox processing)
     _ = render(view)
-    assert_patch(view)
+    # Wait for patch; return path so callers can assert URL contains expected filter param
+    path = assert_patch(view)
+    {view, path}
   end
 
   test "filter All (default) shows all members", %{
@@ -96,7 +98,8 @@ defmodule MvWeb.MemberLive.IndexGroupsFilterTest do
     conn = conn_with_oidc_user(conn)
     {:ok, view, _html} = live(conn, "/members")
 
-    open_filter_and_set_group(view, group1.id, "in")
+    {view, path} = open_filter_and_set_group(view, group1.id, "in")
+    assert path =~ "group_#{group1.id}=in", "expected URL to contain group filter param"
 
     html = render(view)
     assert html =~ m1.first_name
@@ -114,7 +117,7 @@ defmodule MvWeb.MemberLive.IndexGroupsFilterTest do
     conn = conn_with_oidc_user(conn)
     {:ok, view, _html} = live(conn, "/members")
 
-    open_filter_and_set_group(view, group1.id, "not_in")
+    {view, _path} = open_filter_and_set_group(view, group1.id, "not_in")
 
     html = render(view)
     refute html =~ m1.first_name
@@ -132,7 +135,7 @@ defmodule MvWeb.MemberLive.IndexGroupsFilterTest do
     conn = conn_with_oidc_user(conn)
     {:ok, view, _html} = live(conn, "/members")
 
-    open_filter_and_set_group(view, group1.id, "in")
+    {view, _path} = open_filter_and_set_group(view, group1.id, "in")
 
     html = render(view)
     assert html =~ m1.first_name