diff --git a/misc/wasm/wasm_exec.js b/misc/wasm/wasm_exec.js
index 565dc928bc..233c5aa187 100644
--- a/misc/wasm/wasm_exec.js
+++ b/misc/wasm/wasm_exec.js
@@ -177,8 +177,12 @@
 				go: {
 					// func wasmExit(code int32)
 					"runtime.wasmExit": (sp) => {
+						const code = mem().getInt32(sp + 8, true);
 						this.exited = true;
-						this.exit(mem().getInt32(sp + 8, true));
+						delete this._inst;
+						delete this._values;
+						delete this._refs;
+						this.exit(code);
 					},
 
 					// func wasmWrite(fd uintptr, p unsafe.Pointer, n int32)