diff --git a/packages/starter-kit/src/index.ts b/packages/starter-kit/src/index.ts
index d3756cbd..8dd4c848 100644
--- a/packages/starter-kit/src/index.ts
+++ b/packages/starter-kit/src/index.ts
@@ -26,14 +26,14 @@ export function defaultExtensions(options: {
     Dropcursor(),
     Gapcursor(),
     Document(),
-    History(options.history),
+    History(options?.history),
     Paragraph(),
     Text(),
     Bold(),
     Italic(),
     Code(),
-    CodeBlock(options.codeBlock),
-    Heading(options.heading),
+    CodeBlock(options?.codeBlock),
+    Heading(options?.heading),
     HardBreak(),
     Strike(),
     Blockquote(),