diff --git a/docs/contributing.md b/docs/contributing.md
index c5fe5d5a..4e936bba 100644
--- a/docs/contributing.md
+++ b/docs/contributing.md
@@ -20,6 +20,8 @@ to view and discuss other related topics.
1. example of text, which demonstrates and allows to reproduce spelling error;
2. explanation, why produced spelling is wrong and how it should be corrected.
+5. Close issue when it is resolved.
+
## Steps for your contribution
1. Get familiar with [additive speech synthesis](https://en.wikipedia.org/wiki/Speech_synthesis#Formant_synthesis).