diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 8f04e022c..1d8b97f57 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -7,6 +7,8 @@ Your pull requests are welcome; however, they may not be accepted for various re
 1. Respect Notepad++ coding style.
 2. Make a single change per commit.
 3. Make your modification compact - don't reformat source code in your request. It makes code review more difficult.
+4. PR of reformating (changing of ws/TAB, line endings or coding style) of source code won't be accepted. Use issue trackers do your request instead.
+5. Only bug-fix and feature request will be accepted. For the other things, I can run static code analysis tool myself.
 
 In short: The easier the code review is, the better the chance your pull request will get accepted.