diff --git a/docs/content/filtering.md b/docs/content/filtering.md
index 7afd66ff0..6c9fc8c27 100644
--- a/docs/content/filtering.md
+++ b/docs/content/filtering.md
@@ -533,7 +533,7 @@ E.g. for an alternative `filter-file.txt`:
     - *
 
 Files `file1.jpg`, `file3.png` and `file2.avi` are listed whilst
-`secret17.jpg` and files without the suffix .jpg` or `.png` are excluded.
+`secret17.jpg` and files without the suffix `.jpg` or `.png` are excluded.
 
 E.g. for an alternative `filter-file.txt`: