diff --git a/src/algorithms/telemetry_decoder/libs/gps_l1_ca_subframe_fsm.cc b/src/algorithms/telemetry_decoder/libs/gps_l1_ca_subframe_fsm.cc
index 834fc801d..6aa8972ec 100644
--- a/src/algorithms/telemetry_decoder/libs/gps_l1_ca_subframe_fsm.cc
+++ b/src/algorithms/telemetry_decoder/libs/gps_l1_ca_subframe_fsm.cc
@@ -231,6 +231,13 @@ public:
 GpsL1CaSubframeFsm::GpsL1CaSubframeFsm()
 {
     d_nav.reset();
+    i_channel_ID = 0;
+    i_satellite_PRN = 0;
+    d_ephemeris_queue = 0;
+    d_iono_queue = 0;
+    d_utc_model_queue = 0;
+    d_almanac_queue = 0;
+    d_preamble_time_ms = 0;
     initiate(); //start the FSM
 }