diff --git a/src/algorithms/PVT/libs/nmea_printer.cc b/src/algorithms/PVT/libs/nmea_printer.cc
index b1e7079f3..604991af1 100644
--- a/src/algorithms/PVT/libs/nmea_printer.cc
+++ b/src/algorithms/PVT/libs/nmea_printer.cc
@@ -1,5 +1,5 @@
 /*!
- * \file kml_printer.cc
+ * \file nmea_printer.cc
  * \brief Implementation of a NMEA 2.1 printer for GNSS-SDR
  * This class provides a implementation of a subset of the NMEA-0183 standard for interfacing
  * marine electronic devices as defined by the National Marine Electronics Association (NMEA).
@@ -132,7 +132,9 @@ int Nmea_Printer::init_serial(const std::string& serial_device)
      * Opens the serial device and sets the default baud rate for a NMEA transmission (9600,8,N,1)
      */
     int fd = 0;
-    struct termios options = {};
+    struct termios options
+    {
+    };
     int64_t BAUD;
     int64_t DATABITS;
     int64_t STOPBITS;
diff --git a/src/core/receiver/control_thread.cc b/src/core/receiver/control_thread.cc
index c80c78de5..3ba722e28 100644
--- a/src/core/receiver/control_thread.cc
+++ b/src/core/receiver/control_thread.cc
@@ -166,7 +166,7 @@ void ControlThread::init()
     else
         {
             // fill agnss_ref_time_
-            struct tm tm = {};
+            struct tm tm = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
             if (strptime(ref_time_str.c_str(), "%d/%m/%Y %H:%M:%S", &tm) != nullptr)
                 {
                     agnss_ref_time_.d_tv_sec = timegm(&tm);
@@ -876,7 +876,7 @@ std::vector<std::pair<int, Gnss_Satellite>> ControlThread::get_visible_sats(time
     std::vector<unsigned int> visible_gps;
     std::vector<unsigned int> visible_gal;
     std::shared_ptr<PvtInterface> pvt_ptr = flowgraph_->get_pvt();
-    struct tm tstruct = {};
+    struct tm tstruct = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
     char buf[80];
     tstruct = *gmtime(&rx_utc_time);
     strftime(buf, sizeof(buf), "%d/%m/%Y %H:%M:%S ", &tstruct);
diff --git a/src/core/receiver/tcp_cmd_interface.cc b/src/core/receiver/tcp_cmd_interface.cc
index 220d4effb..012d7abb7 100644
--- a/src/core/receiver/tcp_cmd_interface.cc
+++ b/src/core/receiver/tcp_cmd_interface.cc
@@ -142,7 +142,7 @@ std::string TcpCmdInterface::status(const std::vector<std::string> &commandLine
             &course_over_ground_deg,
             &UTC_time) == true)
         {
-            struct tm tstruct = {};
+            struct tm tstruct = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
             char buf1[80];
             tstruct = *gmtime(&UTC_time);
             strftime(buf1, sizeof(buf1), "%d/%m/%Y %H:%M:%S", &tstruct);
@@ -173,7 +173,7 @@ std::string TcpCmdInterface::hotstart(const std::vector<std::string> &commandLin
     if (commandLine.size() > 5)
         {
             // Read commandline time parameter
-            struct tm tm = {};
+            struct tm tm = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
             if (strptime(commandLine.at(1).c_str(), "%d/%m/%Y %H:%M:%S", &tm) == nullptr)
                 {
                     response = "ERROR: time parameter malformed\n";
@@ -219,7 +219,7 @@ std::string TcpCmdInterface::warmstart(const std::vector<std::string> &commandLi
         {
             std::string tmp_str;
             // Read commandline time parameter
-            struct tm tm = {};
+            struct tm tm = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
             tmp_str = commandLine.at(1) + commandLine.at(2);
             if (strptime(commandLine.at(1).c_str(), "%d/%m/%Y %H:%M:%S", &tm) == nullptr)
                 {