diff --git a/app/services/mcp_tools/search_projects.rb b/app/services/mcp_tools/search_projects.rb
index d45859db08b..5fb22c75464 100644
--- a/app/services/mcp_tools/search_projects.rb
+++ b/app/services/mcp_tools/search_projects.rb
@@ -65,7 +65,7 @@ module McpTools
     )
 
     def call(page: nil, **filters)
-      filtered = apply_filters(Project.visible, filters)
+      filtered = apply_filters(Project.project.visible, filters)
       projects = apply_pagination(filtered, page)
 
       {
diff --git a/spec/requests/mcp/mcp_tools/search_projects_spec.rb b/spec/requests/mcp/mcp_tools/search_projects_spec.rb
index d04186ec758..18eca9b91df 100644
--- a/spec/requests/mcp/mcp_tools/search_projects_spec.rb
+++ b/spec/requests/mcp/mcp_tools/search_projects_spec.rb
@@ -56,6 +56,7 @@ RSpec.describe McpTools::SearchProjects, with_flag: { mcp_server: true } do
 
   let!(:project_a) { create(:project, identifier: "abc", name: "The ABC Project", status_code: :on_track) }
   let!(:project_b) { create(:project, identifier: "def", name: "The DEF Project", status_code: :off_track) }
+  let!(:portfolio) { create(:portfolio, identifier: "ghi", name: "The unrelated Portfolio", status_code: :on_track) }
 
   let(:server_config) { create(:mcp_configuration, identifier: "mcp_server") }
   let(:tool_config) { create(:mcp_configuration, identifier: described_class.qualified_name) }