diff --git a/server/modules/rendering/html-plantuml/definition.yml b/server/modules/rendering/html-plantuml/definition.yml
deleted file mode 100644
index 59cc25cf..00000000
--- a/server/modules/rendering/html-plantuml/definition.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-key: htmlPlantuml
-title: PlantUML
-description: Generate diagrams from PlantUML syntax
-author: requarks.io
-icon: mdi-sitemap
-enabledDefault: false
-dependsOn: htmlCore
-props: {}
diff --git a/server/modules/rendering/html-plantuml/renderer.js b/server/modules/rendering/html-plantuml/renderer.js
deleted file mode 100644
index 67c19c89..00000000
--- a/server/modules/rendering/html-plantuml/renderer.js
+++ /dev/null
@@ -1,5 +0,0 @@
-module.exports = {
-  init($, config) {
-
-  }
-}
diff --git a/server/modules/rendering/markdown-plantuml/definition.yml b/server/modules/rendering/markdown-plantuml/definition.yml
index 5eaeb261..cebb9c15 100644
--- a/server/modules/rendering/markdown-plantuml/definition.yml
+++ b/server/modules/rendering/markdown-plantuml/definition.yml
@@ -14,13 +14,13 @@ props:
     order: 1
   openMarker:
     type: String
-    default: "@startuml"
+    default: "```plantuml"
     title: Open Marker
     hint: String to use as opening delimiter
     order: 2
   closeMarker:
     type: String
-    default: "@enduml"
+    default: "```"
     title: Close Marker
     hint: String to use as closing delimiter
     order: 3