diff --git a/wasm/test_page/js/index.js b/wasm/test_page/js/index.js
index 4eb8676..b1c308e 100644
--- a/wasm/test_page/js/index.js
+++ b/wasm/test_page/js/index.js
@@ -111,7 +111,7 @@ langTo.addEventListener("change", e => {
 
 $(".swap").addEventListener("click", e => {
   [langFrom.value, langTo.value] = [langTo.value, langFrom.value];
-  $("#input").value = $("#output").value;
+  $("#input").value = $("#output").innerText;
   loadModel();
 });