diff --git a/composer.local.json b/composer.local.json
index 7ec8c49..fd3d46b 100644
--- a/composer.local.json
+++ b/composer.local.json
@@ -3,8 +3,6 @@
         "mediawiki/semantic-bundle": "~4.0",
         "mediawiki/semantic-scribunto": "~2.1",
 
-        "mediawiki/mermaid": "~3.0",
-
         "wikimedia/css-sanitizer": "2.0.1"
     }
 }
\ No newline at end of file
diff --git a/conf/LocalSettings.php b/conf/LocalSettings.php
index 1051cca..0c57466 100644
--- a/conf/LocalSettings.php
+++ b/conf/LocalSettings.php
@@ -141,7 +141,7 @@ wfLoadExtension( 'JsonConfig' );  # Configuration via Special Wiki Pages contain
 wfLoadExtension( 'TemplateStyles' );  # Embedd Styles from Wiki Pages containing CSS
 wfLoadExtension( 'Scribunto' );  # Lua scripting
 wfLoadExtension( 'SemanticScribunto' );  # Lua scripting using semantic information
-wfLoadExtension( 'Mermaid' );  # Diagrams and flowcharts
+#wfLoadExtension( 'Mermaid' );  # Diagrams and flowcharts, already part of semanticBundle!
 
 # scribunto configuration
 $wgScribuntoDefaultEngine = 'luastandalone';