diff --git a/docs/userguide.rst b/docs/userguide.rst
index 545c4a4880a6744f460a2324035bf08fc4770c21..4952b2e94745810c0a1f5630f4afd71dc3757e6b 100644
--- a/docs/userguide.rst
+++ b/docs/userguide.rst
@@ -43,7 +43,7 @@ Using without installing
 
 You can download source code in Pasteur's **Gitlab**: https://gitlab.pasteur.fr/nmaillet/rpg/.
 
-In order to directly run **RPG** from sources, you need to uncomment line 53 of ``rpg/RapidePeptideGenerator.py``. Modify::
+In order to directly run **RPG** from sources, you need to uncomment line 42 of ``rpg/RapidePeptideGenerator.py``. Modify::
 
     #from context import rpg