diff --git a/src/algorithms/tracking/gnuradio_blocks/galileo_e1_tcp_connector_tracking_cc.cc b/src/algorithms/tracking/gnuradio_blocks/galileo_e1_tcp_connector_tracking_cc.cc
index bdbd5f363..74a399d18 100644
--- a/src/algorithms/tracking/gnuradio_blocks/galileo_e1_tcp_connector_tracking_cc.cc
+++ b/src/algorithms/tracking/gnuradio_blocks/galileo_e1_tcp_connector_tracking_cc.cc
@@ -181,6 +181,7 @@ Galileo_E1_Tcp_Connector_Tracking_cc::Galileo_E1_Tcp_Connector_Tracking_cc(
     d_acc_code_phase_secs = 0.0;
     d_code_phase_samples = 0;
     d_next_prn_length_samples = 0;
+    d_carrier_doppler_hz = 0.0;
 }