diff --git a/packages/crepe/src/feature/latex/block-latex.ts b/packages/crepe/src/feature/latex/block-latex.ts
index 24686cf7a79..3c00c57263f 100644
--- a/packages/crepe/src/feature/latex/block-latex.ts
+++ b/packages/crepe/src/feature/latex/block-latex.ts
@@ -8,7 +8,7 @@ export const blockLatexSchema = codeBlockSchema.extendSchema((prev) => {
       toMarkdown: {
         match: baseSchema.toMarkdown.match,
         runner: (state, node) => {
-          const language = node.attrs.language
+          const language = node.attrs.language ?? ''
           if (language.toLowerCase() === 'latex') {
             state.addNode(
               'math',