diff --git a/.chronus/changes/fix-js-source-file-docs-2024-12-06-22-57-43.md b/.chronus/changes/fix-js-source-file-docs-2024-12-06-22-57-43.md
new file mode 100644
index 0000000000..b7152c7566
--- /dev/null
+++ b/.chronus/changes/fix-js-source-file-docs-2024-12-06-22-57-43.md
@@ -0,0 +1,7 @@
+---
+changeKind: internal
+packages:
+  - "@typespec/compiler"
+---
+
+Fixes incorrect default value in dev doc
diff --git a/packages/compiler/src/testing/types.ts b/packages/compiler/src/testing/types.ts
index c0c7b6e22a..833c052097 100644
--- a/packages/compiler/src/testing/types.ts
+++ b/packages/compiler/src/testing/types.ts
@@ -41,7 +41,7 @@ export interface TypeSpecTestLibraryInit {
   typespecFileFolder?: string;
 
   /**
-   * JS files folder. @default "dist"
+   * JS files folder. @default "dist/src"
    */
   jsFileFolder?: string;
 }