diff --git a/src/hardware/usrp_iface.py b/src/hardware/usrp_iface.py
index 250dfbe1..ce717ed9 100644
--- a/src/hardware/usrp_iface.py
+++ b/src/hardware/usrp_iface.py
@@ -121,10 +121,11 @@ def tune_frequency(self, rf_freq, dsp_freq=0):
             tune_result = self.usrp.set_rx_freq(rf_freq, dsp_freq)
             logger.debug(tune_result)
         else:
-            tune_request = uhd.types.TuneResult(rf_freq, dsp_freq)
+            tune_request = uhd.types.TuneRequest(rf_freq, dsp_freq)
             tune_result = self.usrp.set_rx_freq(tune_request)
+            # FIXME: report actual values when available - see note below
             msg = "rf_freq: {}, dsp_freq: {}"
-            logger.debug(msg.format(tune_result.rf_freq, tune_result.dsp_freq))
+            logger.debug(msg.format(rf_freq, dsp_freq))
 
         # FIXME: uhd.types.TuneResult doesn't seem to be implemented
         #        as of uhd 3.13.1.0-rc1