diff --git a/config.toml b/config.toml
index 8ceca3d..b919a5a 100644
--- a/config.toml
+++ b/config.toml
@@ -67,6 +67,8 @@ defaultContentLanguageInSubdir = false
         name = "deutsch"
         url = "/de/"
         weight = 4
+        pre = "<span lang='de'>"
+        post = "</span>"
         [menu.main.params]
             class = "language-menu"
 
@@ -117,6 +119,8 @@ defaultContentLanguageInSubdir = false
                 name = "english"
                 url = "/"
                 weight = 4
+                pre = "<span lang='en'>"
+                post = "</span>"
                 [languages.de.menu.main.params]
                     class = "language-menu"