diff --git a/src/util.cc b/src/util.cc
index 9fb5c3fd28..fb23f75ede 100644
--- a/src/util.cc
+++ b/src/util.cc
@@ -48,8 +48,7 @@ TwoByteValue::TwoByteValue(Isolate* isolate, Local<Value> value) {
   const size_t storage = string->Length() + 1;
   AllocateSufficientStorage(storage);
 
-  const int flags =
-      String::NO_NULL_TERMINATION | String::REPLACE_INVALID_UTF8;
+  const int flags = String::NO_NULL_TERMINATION;
   const int length = string->Write(out(), 0, storage, flags);
   SetLengthAndZeroTerminate(length);
 }