diff --git a/as/testcase/useUtf8Transform.ts b/as/testcase/useUtf8Transform.ts
index 68a13ee..59a438a 100644
--- a/as/testcase/useUtf8Transform.ts
+++ b/as/testcase/useUtf8Transform.ts
@@ -22,7 +22,12 @@ export const obj: C2 = {
 
 export const arr: C1[] = [new C1(utf8.build("test2"), 4)];
 
+function foo(str: utf8.ConstStr): void {
+  str;
+}
+
 export function _start(): void {
   const str = utf8.build("test3");
   log(str.addr, str.size);
+  foo(utf8.build("test4"));
 }
diff --git a/package.json b/package.json
index 193fb46..487bbfb 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@schleifner/assemblyscript-transform",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "author": "",
   "description": "const utf8 string literal in AssemblyScript",
   "type": "module",
diff --git a/tests/transform.test.ts b/tests/transform.test.ts
index e500571..821edd2 100644
--- a/tests/transform.test.ts
+++ b/tests/transform.test.ts
@@ -36,6 +36,7 @@ test("transform convert utf8 success", () => {
   expect(watContent).toContain("test1");
   expect(watContent).toContain("test2");
   expect(watContent).toContain("test3");
+  expect(watContent).toContain("test4");
 });
 
 test("transform not string literal", () => {
diff --git a/transform/transformBuildUtf8ConstStr.mts b/transform/transformBuildUtf8ConstStr.mts
index 7cbffc1..e6e85d3 100644
--- a/transform/transformBuildUtf8ConstStr.mts
+++ b/transform/transformBuildUtf8ConstStr.mts
@@ -319,8 +319,12 @@ export default class TransformBuildUtf8ConstStr extends Transform {
 
       if (this.isUtf8BuildCall(leftExpression, propertyAccessExpression)) {
         this.handleUtf8BuildCall(node, propertyAccessExpression);
+        return;
       }
     }
+    for (const arg of node.args) {
+      this.visitNode(arg);
+    }
   }
 
   private isUtf8BuildCall(leftExpression: Node, propertyAccessExpression: PropertyAccessExpression): boolean {