diff --git a/src/algorithms/signal_source/adapters/ad9361_fpga_signal_source.cc b/src/algorithms/signal_source/adapters/ad9361_fpga_signal_source.cc
index 131c9235c..4138c038d 100644
--- a/src/algorithms/signal_source/adapters/ad9361_fpga_signal_source.cc
+++ b/src/algorithms/signal_source/adapters/ad9361_fpga_signal_source.cc
@@ -60,6 +60,7 @@ Ad9361FpgaSignalSource::Ad9361FpgaSignalSource(const ConfigurationInterface *con
       rf_gain_rx1_(configuration->property(role + ".gain_rx1", default_manual_gain_rx1)),
       rf_gain_rx2_(configuration->property(role + ".gain_rx2", default_manual_gain_rx2)),
       freq0_(configuration->property(role + ".freq", 0)),
+      freq1_(configuration->property(role + ".freq1", static_cast<uint64_t>(GPS_L5_FREQ_HZ))),
       sample_rate_(configuration->property(role + ".sampling_frequency", default_bandwidth)),
       bandwidth_(configuration->property(role + ".bandwidth", default_bandwidth)),
       samples_to_skip_(0),
@@ -100,8 +101,8 @@ Ad9361FpgaSignalSource::Ad9361FpgaSignalSource(const ConfigurationInterface *con
 
     if (freq0_ == 0)
         {
+            // use ".freq0"
             freq0_ = configuration->property(role + ".freq0", static_cast<uint64_t>(GPS_L1_FREQ_HZ));
-            freq1_ = configuration->property(role + ".freq1", static_cast<uint64_t>(GPS_L5_FREQ_HZ));
         }
 
     if (filter_auto_)