diff --git a/sdk/lib/_internal/vm/bin/file_patch.dart b/sdk/lib/_internal/vm/bin/file_patch.dart
index ec4337c..92a306b 100644
--- a/sdk/lib/_internal/vm/bin/file_patch.dart
+++ b/sdk/lib/_internal/vm/bin/file_patch.dart
@@ -210,9 +210,9 @@
   }
 
   static Stream _listenOnSocket(int socketId, int id, int pathId) {
-    var native = new _NativeSocket.watch(socketId);
-    var socket = new _RawSocket(native);
-    return socket.expand((event) {
+    final nativeSocket = _NativeSocket.watch(socketId);
+    final rawSocket = _RawSocket(nativeSocket);
+    return rawSocket.expand((event) {
       var stops = [];
       var events = [];
       var pair = {};
@@ -300,7 +300,7 @@
         } while (eventCount > 0);
         // Be sure to clear this manually, as the sockets are not read through
         // the _NativeSocket interface.
-        native.available = 0;
+        nativeSocket.available = 0;
         for (var map in pair.values) {
           for (var event in map.values) {
             rewriteMove(event, getIsDir(event));