diff --git a/doc/filelist-guide.rst b/doc/filelist-guide.rst
index eea61580389ce35eb342056802b3a8cb29055d4e..969e812f4ab3ab4f5f28935bfb9d5e6e9e5ceeec 100644
--- a/doc/filelist-guide.rst
+++ b/doc/filelist-guide.rst
@@ -124,7 +124,8 @@ The following list files need to be created:
       filename client_id
 
 
-Please note that in all files, the lines starting with ``#`` will be ignored.
+Please note that in all files, the lines starting with any number of white
+space and ``#`` will be ignored.
 
 
 Protocols and File Lists