diff --git a/apps/modes_gui b/apps/modes_gui
index 5a1a2cc..17ebcba 100755
--- a/apps/modes_gui
+++ b/apps/modes_gui
@@ -23,7 +23,7 @@ import os, sys, time, threading, datetime, math, csv, tempfile
 from optparse import OptionParser
 from PyQt4 import QtCore,QtGui,QtWebKit
 from PyQt4.Qwt5 import Qwt
-from gnuradio import gr, gru, optfir, eng_notation, blks2
+from gnuradio import gr, eng_notation
 from gnuradio.eng_option import eng_option
 from gnuradio.gr.pubsub import pubsub
 import air_modes