diff --git a/railties/test/generators/app_generator_test.rb b/railties/test/generators/app_generator_test.rb
index 774fd0f315a4bc8659a0426510159f78774b6026..8d12f4e5a78574e342cae9ecfcc242dbf85dce3d 100644
--- a/railties/test/generators/app_generator_test.rb
+++ b/railties/test/generators/app_generator_test.rb
@@ -310,7 +310,7 @@ def test_active_storage_install
       case command
       when "active_storage:install"
         @binstub_called += 1
-        assert_equal 1, @binstub_called, "active_storage:install expected to be called once, but was called #{@install_called} times."
+        assert_equal 1, @binstub_called, "active_storage:install expected to be called once, but was called #{@binstub_called} times"
       end
     end