diff --git a/packages/start-plugin-core/src/constants.ts b/packages/start-plugin-core/src/constants.ts
index 4252d2f0662..8814649c8a5 100644
--- a/packages/start-plugin-core/src/constants.ts
+++ b/packages/start-plugin-core/src/constants.ts
@@ -19,4 +19,4 @@ export const ENTRY_POINTS = {
   router: '#tanstack-router-entry',
 } as const
 
-export const TRANSFORM_ID_REGEX = [/\.[cm]?tsx?$/, /\.[cm]?jsx?$/]
+export const TRANSFORM_ID_REGEX = [/\.[cm]?[tj]sx?/]