2 files changed, 6 insertions, 1 deletions
diff --git a/gr-wxgui/python/fftsink_nongl.py b/gr-wxgui/python/fftsink_nongl.py
index 73bc7f41b0..ade23f9f86 100644
--- a/gr-wxgui/python/fftsink_nongl.py
+++ b/gr-wxgui/python/fftsink_nongl.py
@@ -102,6 +102,8 @@ class fft_sink_base(object):
     def _set_n(self):
         self.one_in_n.set_n(max(1, int(self.sample_rate/self.fft_size/self.fft_rate)))
 
+    def set_callback(self, callb):
+        return
 
 class fft_sink_f(gr.hier_block2, fft_sink_base):
     def __init__(self, parent, baseband_freq=0, ref_scale=2.0,
diff --git a/gr-wxgui/python/waterfallsink_nongl.py b/gr-wxgui/python/waterfallsink_nongl.py
index bd93a84ab7..5cfcd24413 100644
--- a/gr-wxgui/python/waterfallsink_nongl.py
+++ b/gr-wxgui/python/waterfallsink_nongl.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 #
-# Copyright 2003-2008,2012 Free Software Foundation, Inc.
+# Copyright 2003-2005,2007,2008,2013 Free Software Foundation, Inc.
 #
 # This file is part of GNU Radio
 #
@@ -74,6 +74,9 @@ class waterfall_sink_base(object):
     def _set_n(self):
         self.one_in_n.set_n(max(1, int(self.sample_rate/self.fft_size/self.fft_rate)))
 
+    def set_callback(self, callb):
+        return
+
 class waterfall_sink_f(gr.hier_block2, waterfall_sink_base):
     def __init__(self, parent, baseband_freq=0,
                  y_per_div=10, ref_level=50, sample_rate=1, fft_size=512,