diff --git a/kalamar.ids-mannheim.conf b/kalamar.ids-mannheim.conf
index 34004e7..4969880 100644
--- a/kalamar.ids-mannheim.conf
+++ b/kalamar.ids-mannheim.conf
@@ -32,6 +32,8 @@
     },
     navi_ext => [
       {
+        # Replaces Kalamar's default corpus section (same id) in place,
+        # extending it with the release-log sub-item.
         "title" => "corpus",
         "id" => "corpus",
         "class" => "folded",
@@ -96,8 +98,6 @@
       de_Nav_privacy => 'Datenschutz',
       de_Nav_corpora => 'Korpora',
       en_Nav_corpora => 'Corpora',
-      de_Nav_corpus => 'Korpus',
-      en_Nav_corpus => 'Corpus',
       en_howToCite => 'Citation Help',
       de_howToCite => 'Zitierhilfe',
       en_recentCorpusPub => 'Recent publications to refer to DeReKo as linguistic research data',
@@ -112,14 +112,8 @@
       en_compositionbysource => 'Composition by source',
       #de_Title_composition => 'Korpus-Zusammensetzung',
       #en_Title_composition => 'Corpus Composition',
-      en_Nav_composition => 'Composition',
-      de_Nav_composition => 'Zusammensetzung',
-      en_Nav_useful_subcorpora => 'Useful subcorpora',
-      de_Nav_useful_subcorpora => 'Nützliche Subkorpora',
-      en_Nav_named_vc => 'Named VC',
-      de_Nav_named_vc => 'Benamte VC',
       en_Nav_releases => 'Release Log',
-      de_Nav_releases => 'Versionsverlauf',
+      de_Nav_releases => 'Korpus-Releases',
     }
   },
   'TagHelpers-ContentBlock' => {