diff --git a/docs/conf.py b/docs/conf.py
index <HASH>..<HASH> 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -335,7 +335,7 @@ latex_logo = 'raiden.png'
 #
 # latex_appendices = []
 
-# It false, will not define \strong, \code, 	itleref, \crossref ... but only
+# It false, will not define \strong, \code,  itleref, \crossref ... but only
 # \sphinxstrong, ..., \sphinxtitleref, ... To help avoid clash with user added
 # packages.
 #
isort fix on docs/conf.py