diff --git a/packages/codemirror/src/index.ts b/packages/codemirror/src/index.ts
index 3edb2a148..787c4a40e 100644
--- a/packages/codemirror/src/index.ts
+++ b/packages/codemirror/src/index.ts
@@ -26,7 +26,7 @@ export default class CodeMirror extends EditorView {
                 indentWithTab
             ]),
             languageCompartment.of([]),
-            syntaxHighlighting(defaultHighlightStyle),
+            syntaxHighlighting(defaultHighlightStyle, { fallback: true }),
             highlightActiveLine(),
             highlightSelectionMatches(),
             bracketMatching(),