diff --git a/lib/imap.js b/lib/imap.js
index 0835dae..7ce8c2d 100644
--- a/lib/imap.js
+++ b/lib/imap.js
@@ -310,6 +310,7 @@ ImapConnection.prototype.connect = function(loginCb) {
       }
     }
 
+    indata.line = indata.line.trim();
     if (indata.line[0] === '*') { // Untagged server response
       var isUnsolicited = (requests[0] && requests[0].cmd === 'NOOP')
                           || (state.isIdle && state.ext.idle.state !== IDLE_NONE)