diff --git a/app/controllers/trackers_controller.rb b/app/controllers/trackers_controller.rb
index f2d8e3873..7b134292d 100644
--- a/app/controllers/trackers_controller.rb
+++ b/app/controllers/trackers_controller.rb
@@ -90,8 +90,15 @@ class TrackersController < ApplicationController
     @tracker = Tracker.find(params[:id])
     unless @tracker.issues.empty?
       projects = Project.joins(:issues).where(issues: {tracker_id: @tracker.id}).sorted.distinct
+      tracker_project_ids = @tracker.projects.ids.to_set
       links = projects.map do |p|
-        view_context.link_to(p, project_issues_path(p, set_filter: 1, tracker_id: @tracker.id, status_id: '*'))
+        if tracker_project_ids.include?(p.id)
+          view_context.link_to(p, project_issues_path(p, set_filter: 1, tracker_id: @tracker.id, status_id: '*'))
+        else
+          # This tracker is not enabled in the project,
+          # so we can't link to the issues list
+          ERB::Util.html_escape(p.name)
+        end
       end.join(', ')
       flash[:error] = l(:error_can_not_delete_tracker_html, projects: links.html_safe)
     else
diff --git a/test/functional/trackers_controller_test.rb b/test/functional/trackers_controller_test.rb
index f3f614198..db8df2248 100644
--- a/test/functional/trackers_controller_test.rb
+++ b/test/functional/trackers_controller_test.rb
@@ -273,20 +273,28 @@ class TrackersControllerTest < Redmine::ControllerTest
 
   def test_destroy_tracker_in_use
     tracker = Tracker.generate!(name: 'In use')
-    projects = Array.new(2) do
+    project1, project2 = Array.new(2) do
       project = Project.generate!
       Issue.generate!(project: project, tracker: tracker)
       project
     end
+    # Remove all associated trackers from project2
+    project2.trackers = []
+    project2.save!
 
     assert_no_difference 'Tracker.count' do
       delete :destroy, params: {id: tracker.id}
     end
     assert_redirected_to action: 'index'
-    assert_match /The following projects have issues with this tracker:/, flash[:error]
-    projects.each do |project|
-      assert_match /#{project.name}/, flash[:error]
-    end
+    assert_includes flash[:error], 'The following projects have issues with this tracker:'
+
+    # Ensure project1 is listed with a link to its issue list
+    assert_includes flash[:error], project1.name
+    assert_match %r{<a href=".*#{project1.identifier}.*">}, flash[:error]
+
+    # project2 should only appear as text in the error message, without a link
+    assert_includes flash[:error], project2.name
+    assert_no_match %r{<a href=".*#{project2.identifier}.*">}, flash[:error]
   end
 
   def test_get_fields