diff --git a/src/algorithms/conditioner/adapters/array_signal_conditioner.cc b/src/algorithms/conditioner/adapters/array_signal_conditioner.cc
index 6f98e8bcb..9350cada0 100644
--- a/src/algorithms/conditioner/adapters/array_signal_conditioner.cc
+++ b/src/algorithms/conditioner/adapters/array_signal_conditioner.cc
@@ -51,6 +51,7 @@ ArraySignalConditioner::ArraySignalConditioner(ConfigurationInterface *configura
                 queue_(queue)
 {
     connected_ = false;
+    if(configuration){ };
 }
 
 
diff --git a/src/algorithms/conditioner/adapters/signal_conditioner.cc b/src/algorithms/conditioner/adapters/signal_conditioner.cc
index 6be9d31d2..cd7b61171 100644
--- a/src/algorithms/conditioner/adapters/signal_conditioner.cc
+++ b/src/algorithms/conditioner/adapters/signal_conditioner.cc
@@ -51,6 +51,7 @@ SignalConditioner::SignalConditioner(ConfigurationInterface *configuration,
                 queue_(queue)
 {
     connected_ = false;
+    if(configuration){ };
 }
 
 
diff --git a/src/core/system_parameters/gps_navigation_message.cc b/src/core/system_parameters/gps_navigation_message.cc
index 8bf80dc25..de40c98dc 100644
--- a/src/core/system_parameters/gps_navigation_message.cc
+++ b/src/core/system_parameters/gps_navigation_message.cc
@@ -429,7 +429,7 @@ void Gps_Navigation_Message::satellitePosition(double transmitTime)
 int Gps_Navigation_Message::subframe_decoder(char *subframe)
 {
     int subframe_ID = 0;
-    int SV_data_ID = 0;
+    int SV_data_ID;
     int SV_page = 0;
     //double tmp_TOW;
 
diff --git a/src/core/system_parameters/sbas_telemetry_data.cc b/src/core/system_parameters/sbas_telemetry_data.cc
index 382d039c3..22f7f88b5 100644
--- a/src/core/system_parameters/sbas_telemetry_data.cc
+++ b/src/core/system_parameters/sbas_telemetry_data.cc
@@ -687,7 +687,7 @@ int Sbas_Telemetry_Data::decode_sbstype7(const sbsmsg_t *msg, sbssat_t *sbssat)
 /* decode type 9: geo navigation message -------------------------------------*/
 int Sbas_Telemetry_Data::decode_sbstype9(const sbsmsg_t *msg, nav_t *nav)
 {
-    seph_t seph = {0};
+    seph_t seph;
     int i;
     int sat;
 
diff --git a/src/core/system_parameters/sbas_telemetry_data.h b/src/core/system_parameters/sbas_telemetry_data.h
index a5233542a..f3f5063ce 100644
--- a/src/core/system_parameters/sbas_telemetry_data.h
+++ b/src/core/system_parameters/sbas_telemetry_data.h
@@ -326,17 +326,18 @@ private:
      */
 
     typedef struct {        /* SBAS ephemeris type */
-        int sat;            /* satellite number */
+        int sat = 0;            /* satellite number */
         //gtime_t t0;         /* reference epoch time (GPST) */
-        int t0;
+        int t0 = 0;
         //gtime_t tof;        /* time of message frame (GPST) */
-        double tof;
-        int sva;            /* SV accuracy (URA index) */
-        int svh;            /* SV health (0:ok) */
-        double pos[3];      /* satellite position (m) (ecef) */
-        double vel[3];      /* satellite velocity (m/s) (ecef) */
-        double acc[3];      /* satellite acceleration (m/s^2) (ecef) */
-        double af0,af1;     /* satellite clock-offset/drift (s,s/s) */
+        double tof = 0;
+        int sva = 0;            /* SV accuracy (URA index) */
+        int svh = 0;            /* SV health (0:ok) */
+        double pos[3] = {0, 0, 0};      /* satellite position (m) (ecef) */
+        double vel[3] = {0, 0, 0};      /* satellite velocity (m/s) (ecef) */
+        double acc[3] = {0, 0, 0};      /* satellite acceleration (m/s^2) (ecef) */
+        double af0 = 0;
+        double af1 = 0;     /* satellite clock-offset/drift (s,s/s) */
     } seph_t;
 
     typedef struct {        /* navigation data type */