diff --git a/mkdocs.yml b/mkdocs.yml
index 56bdf96a..a4de328c 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -91,7 +91,7 @@ nav:
           - configuration/rule-set/index.md
           - Source Format: configuration/rule-set/source-format.md
           - Headless Rule: configuration/rule-set/headless-rule.md
-          - AdGuard DNS Filer: configuration/rule-set/adguard.md
+          - AdGuard DNS Filter: configuration/rule-set/adguard.md
       - Experimental:
           - configuration/experimental/index.md
           - Cache File: configuration/experimental/cache-file.md