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-rw-r--r--host/lib/usrp/usrp1/dsp_impl.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/host/lib/usrp/usrp1/dsp_impl.cpp b/host/lib/usrp/usrp1/dsp_impl.cpp
index e9a5e60a6..370f4831f 100644
--- a/host/lib/usrp/usrp1/dsp_impl.cpp
+++ b/host/lib/usrp/usrp1/dsp_impl.cpp
@@ -102,7 +102,7 @@ void usrp1_impl::rx_dsp_set(const wax::obj &key_, const wax::obj &val){
("0", FR_RX_FREQ_0) ("1", FR_RX_FREQ_1)
("2", FR_RX_FREQ_2) ("3", FR_RX_FREQ_3)
;
- _iface->poke32(freq_name_to_reg_val[key.name], reg_word);
+ _iface->poke32(freq_name_to_reg_val[key.name], ~reg_word + 1);
_rx_dsp_freqs[key.name] = new_freq;
return;
}