diff --git a/src/fs_event_wrap.cc b/src/fs_event_wrap.cc
index 15ad2f71bc..dac4dc3ef6 100644
--- a/src/fs_event_wrap.cc
+++ b/src/fs_event_wrap.cc
@@ -136,7 +136,7 @@ void FSEventWrap::OnEvent(uv_fs_event_t* handle, const char* filename,
   // unreasonable, right? Still, we should revisit this before v1.0.
   if (status) {
     SetErrno(uv_last_error(uv_default_loop()));
-    eventStr = String::Empty();
+    eventStr = String::Empty(node_isolate);
   }
   else if (events & UV_RENAME) {
     eventStr = String::New("rename");
diff --git a/src/node.cc b/src/node.cc
index a72259ab21..deab86eea8 100644
--- a/src/node.cc
+++ b/src/node.cc
@@ -1035,7 +1035,7 @@ Local<Value> Encode(const void *buf, size_t len, enum encoding encoding) {
         Buffer::New(static_cast<const char*>(buf), len)->handle_);
   }
 
-  if (!len) return scope.Close(String::Empty());
+  if (!len) return scope.Close(String::Empty(node_isolate));
 
   if (encoding == BINARY) {
     const unsigned char *cbuf = static_cast<const unsigned char*>(buf);
diff --git a/src/node_http_parser.cc b/src/node_http_parser.cc
index eb05a8fd5f..adddb04906 100644
--- a/src/node_http_parser.cc
+++ b/src/node_http_parser.cc
@@ -170,7 +170,7 @@ struct StringPtr {
     if (str_)
       return String::New(str_, size_);
     else
-      return String::Empty();
+      return String::Empty(node_isolate);
   }
 
 
diff --git a/src/tcp_wrap.cc b/src/tcp_wrap.cc
index f8eb0d29aa..dc282926d7 100644
--- a/src/tcp_wrap.cc
+++ b/src/tcp_wrap.cc
@@ -461,7 +461,7 @@ Local<Object> AddressToJS(const sockaddr* addr) {
     break;
 
   default:
-    info->Set(address_sym, String::Empty());
+    info->Set(address_sym, String::Empty(node_isolate));
   }
 
   return scope.Close(info);