diff --git a/eth/tracers/js/goja.go b/eth/tracers/js/goja.go
index 387f9fbc91..3cc79e4ee7 100644
--- a/eth/tracers/js/goja.go
+++ b/eth/tracers/js/goja.go
@@ -85,7 +85,7 @@ func fromBuf(vm *goja.Runtime, bufType goja.Value, buf goja.Value, allowString b
 		if !obj.Get("constructor").SameAs(bufType) {
 			break
 		}
-		b := obj.Get("buffer").Export().(goja.ArrayBuffer).Bytes()
+		b := obj.Export().([]byte)
 		return b, nil
 	}
 	return nil, errors.New("invalid buffer type")