diff --git a/doc/040_backup.rst b/doc/040_backup.rst
index bd3f1c631..3b50b1683 100644
--- a/doc/040_backup.rst
+++ b/doc/040_backup.rst
@@ -146,6 +146,8 @@ args:
 
     $ restic -r /tmp/backup backup --files-from /tmp/files_to_backup /tmp/some_additional_file
 
+Paths in the listing file can be absolute or relative.
+
 Comparing Snapshots
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