diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index a5d9b2e6b..992d9ece9 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -559,14 +559,6 @@ Performance/RedundantSplitRegexpArgument:
   Exclude:
     - 'lib/redmine/wiki_formatting/textile/redcloth3.rb'
 
-# This cop supports unsafe autocorrection (--autocorrect-all).
-Performance/StringInclude:
-  Exclude:
-    - 'test/functional/versions_controller_test.rb'
-    - 'test/integration/sessions_test.rb'
-    - 'test/unit/lib/redmine/scm/adapters/bazaar_adapter_test.rb'
-    - 'test/unit/lib/redmine/wiki_formatting/macros_test.rb'
-
 # This cop supports unsafe autocorrection (--autocorrect-all).
 # Configuration parameters: OnlySumOrWithInitialValue.
 Performance/Sum:
diff --git a/test/functional/versions_controller_test.rb b/test/functional/versions_controller_test.rb
index fdd767560..d872f62eb 100644
--- a/test/functional/versions_controller_test.rb
+++ b/test/functional/versions_controller_test.rb
@@ -336,7 +336,7 @@ class VersionsControllerTest < Redmine::ControllerTest
     end
     assert_redirected_to :controller => 'projects', :action => 'settings',
                          :tab => 'versions', :id => 'ecookbook'
-    assert flash[:error].match(/Unable to delete version/)
+    assert flash[:error].include?('Unable to delete version')
     assert Version.find_by_id(2)
   end
 
diff --git a/test/integration/sessions_test.rb b/test/integration/sessions_test.rb
index 93b8988c5..e78de7f26 100644
--- a/test/integration/sessions_test.rb
+++ b/test/integration/sessions_test.rb
@@ -39,7 +39,7 @@ class SessionsTest < Redmine::IntegrationTest
 
     get '/my/account'
     assert_response 302
-    assert flash[:error].match(/Your session has expired/)
+    assert flash[:error].include?('Your session has expired')
   end
 
   def test_lock_user_kills_sessions
@@ -51,7 +51,7 @@ class SessionsTest < Redmine::IntegrationTest
 
     get '/my/account'
     assert_response 302
-    assert flash[:error].match(/Your session has expired/)
+    assert flash[:error].include?('Your session has expired')
   end
 
   def test_update_user_does_not_kill_sessions
diff --git a/test/unit/lib/redmine/scm/adapters/bazaar_adapter_test.rb b/test/unit/lib/redmine/scm/adapters/bazaar_adapter_test.rb
index 0bef95141..16e5c1895 100644
--- a/test/unit/lib/redmine/scm/adapters/bazaar_adapter_test.rb
+++ b/test/unit/lib/redmine/scm/adapters/bazaar_adapter_test.rb
@@ -42,7 +42,7 @@ class BazaarAdapterTest < ActiveSupport::TestCase
 
     def test_cat
       cat = @adapter.cat('directory/document.txt')
-      assert cat =~ /Write the contents of a file as of a given revision to standard output/
+      assert cat.include?('Write the contents of a file as of a given revision to standard output')
     end
 
     def test_cat_path_invalid
diff --git a/test/unit/lib/redmine/wiki_formatting/macros_test.rb b/test/unit/lib/redmine/wiki_formatting/macros_test.rb
index 28be28d47..278a6815e 100644
--- a/test/unit/lib/redmine/wiki_formatting/macros_test.rb
+++ b/test/unit/lib/redmine/wiki_formatting/macros_test.rb
@@ -211,7 +211,7 @@ class Redmine::WikiFormatting::MacrosTest < Redmine::HelperTest
 
   def test_macro_hello_world
     text = "{{hello_world}}"
-    assert textilizable(text).match(/Hello world!/)
+    assert textilizable(text).include?('Hello world!')
   end
 
   def test_macro_hello_world_should_escape_arguments