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 e028893ca..a7c0062a2 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
@@ -267,8 +267,8 @@ int Galileo_E1_Tcp_Connector_Tracking_cc::general_work(int noutput_items __attri
     gr_vector_const_void_star &input_items, gr_vector_void_star &output_items)
 {
     // process vars
-    float carr_error_filt_hz;
-    float code_error_filt_chips;
+    float carr_error_filt_hz = 0.0;
+    float code_error_filt_chips = 0.0;
 
     tcp_packet_data tcp_data;
     // GNSS_SYNCHRO OBJECT to interchange data between tracking->telemetry_decoder
diff --git a/src/algorithms/tracking/gnuradio_blocks/gps_l1_ca_tcp_connector_tracking_cc.cc b/src/algorithms/tracking/gnuradio_blocks/gps_l1_ca_tcp_connector_tracking_cc.cc
index f4fe4c018..3e3515e29 100644
--- a/src/algorithms/tracking/gnuradio_blocks/gps_l1_ca_tcp_connector_tracking_cc.cc
+++ b/src/algorithms/tracking/gnuradio_blocks/gps_l1_ca_tcp_connector_tracking_cc.cc
@@ -297,10 +297,10 @@ int Gps_L1_Ca_Tcp_Connector_Tracking_cc::general_work(int noutput_items __attrib
     gr_vector_const_void_star &input_items, gr_vector_void_star &output_items)
 {
     // process vars
-    float carr_error;
-    float carr_nco;
-    float code_error;
-    float code_nco;
+    float carr_error = 0.0;
+    float carr_nco = 0.0;
+    float code_error = 0.0;
+    float code_nco = 0.0;
 
     tcp_packet_data tcp_data;
     // GNSS_SYNCHRO OBJECT to interchange data between tracking->telemetry_decoder