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-rw-r--r--gr-qtgui/examples/pyqt_freq_f.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/gr-qtgui/examples/pyqt_freq_f.py b/gr-qtgui/examples/pyqt_freq_f.py
index 1059b967a7..fe72a73d59 100644
--- a/gr-qtgui/examples/pyqt_freq_f.py
+++ b/gr-qtgui/examples/pyqt_freq_f.py
@@ -138,7 +138,7 @@ class my_top_block(gr.top_block):
thr = blocks.throttle(gr.sizeof_float, 100*npts)
self.snk1 = qtgui.freq_sink_f(npts, filter.firdes.WIN_BLACKMAN_hARRIS,
0, Rs,
- "Real freq Example", 3)
+ "Real freq Example", 3, None)
self.connect(src1, (src,0))
self.connect(src2, (src,1))