diff --git a/src/plugins/local-llm-rename/visit-all-identifiers.test.ts b/src/plugins/local-llm-rename/visit-all-identifiers.test.ts
index e821218..a1d3a9a 100644
--- a/src/plugins/local-llm-rename/visit-all-identifiers.test.ts
+++ b/src/plugins/local-llm-rename/visit-all-identifiers.test.ts
@@ -298,3 +298,20 @@ const bar = 2;
 `.trim()
   );
 });
+
+test("should not craash to 'arguments' assigning", async () => {
+  const code = `
+function foo() {
+  arguments = '??';
+}
+`.trim();
+  const result = await visitAllIdentifiers(code, async () => "foobar", 200);
+  assert.equal(
+    result,
+    `
+function foobar() {
+  arguments = '??';
+}
+    `.trim()
+  );
+});
diff --git a/src/plugins/local-llm-rename/visit-all-identifiers.ts b/src/plugins/local-llm-rename/visit-all-identifiers.ts
index bcd434c..f50024e 100644
--- a/src/plugins/local-llm-rename/visit-all-identifiers.ts
+++ b/src/plugins/local-llm-rename/visit-all-identifiers.ts
@@ -16,7 +16,7 @@ export async function visitAllIdentifiers(
   contextWindowSize: number,
   onProgress?: (percentageDone: number) => void
 ) {
-  const ast = await parseAsync(code);
+  const ast = await parseAsync(code, { sourceType: "script" });
   const renames = new Set<string>();
   const visited = new Set<string>();