diff --git a/support/doc/translation.md b/support/doc/translation.md
index 52045083c..ebbc26c1a 100644
--- a/support/doc/translation.md
+++ b/support/doc/translation.md
@@ -23,3 +23,13 @@ There are 4 files:
  * **server**: contains server strings (privacies, licences...)
  * **iso639**: contains iso639 (languages) strings used by PeerTube to describe the audio language of a particular video.
  It's the reason why these strings should be translated too. There are many strings so do not hesitate to translate only main audio languages.
+
+## Tips
+
+You must not translate special tags like `<x id="INTERPOLATION" ... />`.
+
+For example: 
+```<x id="INTERPOLATION" equiv-text="{{ video.publishedAt | myFromNow }}"/> - <x id="INTERPOLATION_1" equiv-text="{{ video.views | myNumberFormatter }}"/> views```
+
+should be in french 
+```<x id="INTERPOLATION" equiv-text="{{ video.publishedAt | myFromNow }}"/> - <x id="INTERPOLATION_1" equiv-text="{{ video.views | myNumberFormatter }}"/> vues```
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