diff --git a/docs/changelog.md b/docs/changelog.md
index c3ba94f56..2404f0dfb 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -60,6 +60,8 @@ SPDX-FileCopyrightText: 2011-2021 Carles Fernandez-Prades <carles.fernandez@cttc
   make the receiver unusable when running on non-FPGA-enabled platforms. On
   FPGA-enabled platforms, now it is possible to run non-FPGA-enabled
   configurations.
+- Fix bug that made the Monitor block to always set to 0 the
+  `carrier_phase_rads` parameter value.
 
 &nbsp;
 
diff --git a/src/core/monitor/serdes_gnss_synchro.h b/src/core/monitor/serdes_gnss_synchro.h
index d9539c577..6edbac87e 100644
--- a/src/core/monitor/serdes_gnss_synchro.h
+++ b/src/core/monitor/serdes_gnss_synchro.h
@@ -100,6 +100,7 @@ public:
                 obs->set_prompt_q(gs.Prompt_Q);
                 obs->set_cn0_db_hz(gs.CN0_dB_hz);
                 obs->set_carrier_doppler_hz(gs.Carrier_Doppler_hz);
+                obs->set_carrier_phase_rads(gs.Carrier_phase_rads);
                 obs->set_code_phase_samples(gs.Code_phase_samples);
                 obs->set_tracking_sample_counter(gs.Tracking_sample_counter);
                 obs->set_flag_valid_symbol_output(gs.Flag_valid_symbol_output);
@@ -143,6 +144,8 @@ public:
                 gs.Prompt_Q = gs_read.prompt_q();
                 gs.CN0_dB_hz = gs_read.cn0_db_hz();
                 gs.Carrier_Doppler_hz = gs_read.carrier_doppler_hz();
+                gs.Carrier_phase_rads = gs_read.carrier_phase_rads();
+                gs.Code_phase_samples = gs_read.code_phase_samples();
                 gs.Tracking_sample_counter = gs_read.tracking_sample_counter();
                 gs.Flag_valid_symbol_output = gs_read.flag_valid_symbol_output();
                 gs.correlation_length_ms = gs_read.correlation_length_ms();