diff --git a/packages/text/src/kits/server-kit.ts b/packages/text/src/kits/server-kit.ts
index dc8762046f..86271f5195 100644
--- a/packages/text/src/kits/server-kit.ts
+++ b/packages/text/src/kits/server-kit.ts
@@ -80,7 +80,6 @@ export const ServerKit = Extension.create<ServerKitOptions>({
       }),
       CodeBlockExtension.configure(codeBlockOptions),
       CodeExtension.configure(codeOptions),
-      CodeBlockExtension.configure(codeBlockOptions),
       ...tableExtensions,
       ...taskListExtensions,
       ...fileExtensions,