diff --git a/cli/targets/proto.js b/cli/targets/proto.js
index fd3baec8b..b30c7f711 100644
--- a/cli/targets/proto.js
+++ b/cli/targets/proto.js
@@ -18,6 +18,7 @@ var Namespace = protobuf.Namespace,
 var out = [];
 var indent = 0;
 var first = false;
+var syntax = 3;
 
 function proto_target(root, options, callback) {
 
@@ -288,4 +289,4 @@ function buildOptions(object) {
         var val = object.options[key];
         push("option " + key + " = " + JSON.stringify(val) + ";");
     });
-}
\ No newline at end of file
+}