diff --git a/spec/classes/redis_spec.rb b/spec/classes/redis_spec.rb
index 5221a19b..a4ccd6d8 100644
--- a/spec/classes/redis_spec.rb
+++ b/spec/classes/redis_spec.rb
@@ -1707,7 +1707,7 @@ class { 'redis':
           }
         end
 
-        it { is_expected.not_to contain_file(config_file_orig).with('content' => %r{^rdb-save-incremental-fsync}) }
+        it { is_expected.to contain_file(config_file_orig).with('content' => %r{(?!^rdb-save-incremental-fsync.*)}) }
       end
 
       describe 'test systemd service timeouts' do