diff --git a/lib/wasm/wasm_exec.js b/lib/wasm/wasm_exec.js
index d71af9e97e8ca9..11ac5a07cdf030 100644
--- a/lib/wasm/wasm_exec.js
+++ b/lib/wasm/wasm_exec.js
@@ -97,8 +97,8 @@
 		throw new Error("globalThis.TextDecoder is not available, polyfill required");
 	}
 
-	const encoder = new TextEncoder("utf-8");
-	const decoder = new TextDecoder("utf-8");
+	const encoder = new TextEncoder();
+	const decoder = new TextDecoder();
 
 	globalThis.Go = class {
 		constructor() {