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-rw-r--r--gr-qtgui/examples/pyqt_const_c.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/gr-qtgui/examples/pyqt_const_c.py b/gr-qtgui/examples/pyqt_const_c.py
index a02deb78a1..d027206dd1 100644
--- a/gr-qtgui/examples/pyqt_const_c.py
+++ b/gr-qtgui/examples/pyqt_const_c.py
@@ -141,7 +141,7 @@ class my_top_block(gr.top_block):
src = blocks.add_cc()
channel = channels.channel_model(0.001)
thr = blocks.throttle(gr.sizeof_gr_complex, 100*npts)
- self.snk1 = qtgui.const_sink_c(npts, "Constellation Example", 1)
+ self.snk1 = qtgui.const_sink_c(npts, "Constellation Example", 1, None)
self.snk1.disable_legend()
self.connect(src1, (src,0))