diff --git a/lib/Connection.js b/lib/Connection.js
index 699b4a5..57b8338 100644
--- a/lib/Connection.js
+++ b/lib/Connection.js
@@ -323,7 +323,7 @@ Connection.prototype.append = function(data, options, cb) {
       options.flags = [options.flags];
     if (options.flags.length > 0) {
       for (var i = 0, len = options.flags.length; i < len; ++i) {
-        if (options.flags[i][0] !== '\\')
+        if (options.flags[i][0] !== '$' && options.flags[i][0] !== '\\')
           options.flags[i] = '\\' + options.flags[i];
       }
       cmd += ' (' + options.flags.join(' ') + ')';