diff --git a/src/algorithms/PVT/libs/CMakeLists.txt b/src/algorithms/PVT/libs/CMakeLists.txt
index cd306531a..25a4c592a 100644
--- a/src/algorithms/PVT/libs/CMakeLists.txt
+++ b/src/algorithms/PVT/libs/CMakeLists.txt
@@ -80,8 +80,7 @@ else()
     )
 endif()
 
-target_link_libraries(
-    pvt_lib
+target_link_libraries(pvt_lib
     rtklib_lib
     gnss_sdr_flags
     gnss_sp_libs
diff --git a/src/algorithms/PVT/libs/rtcm_printer.cc b/src/algorithms/PVT/libs/rtcm_printer.cc
index 350e57608..89fd17b46 100644
--- a/src/algorithms/PVT/libs/rtcm_printer.cc
+++ b/src/algorithms/PVT/libs/rtcm_printer.cc
@@ -46,7 +46,7 @@
 using google::LogMessage;
 
 
-Rtcm_Printer::Rtcm_Printer(const std::string& filename, bool flag_rtcm_file_dump, bool flag_rtcm_server, bool flag_rtcm_tty_port, uint16_t rtcm_tcp_port, uint16_t rtcm_station_id, std::string rtcm_dump_devname, bool time_tag_name, const std::string& base_path)
+Rtcm_Printer::Rtcm_Printer(const std::string& filename, bool flag_rtcm_file_dump, bool flag_rtcm_server, bool flag_rtcm_tty_port, uint16_t rtcm_tcp_port, uint16_t rtcm_station_id, const std::string& rtcm_dump_devname, bool time_tag_name, const std::string& base_path)
 {
     boost::posix_time::ptime pt = boost::posix_time::second_clock::local_time();
     tm timeinfo = boost::posix_time::to_tm(pt);
diff --git a/src/algorithms/PVT/libs/rtcm_printer.h b/src/algorithms/PVT/libs/rtcm_printer.h
index 9e3b9cf7c..883826800 100644
--- a/src/algorithms/PVT/libs/rtcm_printer.h
+++ b/src/algorithms/PVT/libs/rtcm_printer.h
@@ -48,7 +48,7 @@ public:
     /*!
      * \brief Default constructor.
      */
-    Rtcm_Printer(const std::string& filename, bool flag_rtcm_file_dump, bool flag_rtcm_server, bool flag_rtcm_tty_port, uint16_t rtcm_tcp_port, uint16_t rtcm_station_id, std::string rtcm_dump_filename, bool time_tag_name = true, const std::string& base_path = ".");
+    Rtcm_Printer(const std::string& filename, bool flag_rtcm_file_dump, bool flag_rtcm_server, bool flag_rtcm_tty_port, uint16_t rtcm_tcp_port, uint16_t rtcm_station_id, const std::string& rtcm_dump_filename, bool time_tag_name = true, const std::string& base_path = ".");
 
     /*!
      * \brief Default destructor.
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 a7b4d0780..91cea2f28 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
@@ -90,7 +90,7 @@ Galileo_E1_Tcp_Connector_Tracking_cc::Galileo_E1_Tcp_Connector_Tracking_cc(
     int64_t fs_in,
     uint32_t vector_length,
     bool dump,
-    std::string dump_filename,
+    const std::string& dump_filename,
     float pll_bw_hz __attribute__((unused)),
     float dll_bw_hz __attribute__((unused)),
     float early_late_space_chips,
diff --git a/src/algorithms/tracking/gnuradio_blocks/galileo_e1_tcp_connector_tracking_cc.h b/src/algorithms/tracking/gnuradio_blocks/galileo_e1_tcp_connector_tracking_cc.h
index dedb723f5..7f93ebb03 100644
--- a/src/algorithms/tracking/gnuradio_blocks/galileo_e1_tcp_connector_tracking_cc.h
+++ b/src/algorithms/tracking/gnuradio_blocks/galileo_e1_tcp_connector_tracking_cc.h
@@ -97,7 +97,7 @@ private:
     Galileo_E1_Tcp_Connector_Tracking_cc(
         int64_t fs_in, uint32_t vector_length,
         bool dump,
-        std::string dump_filename,
+        const std::string& dump_filename,
         float pll_bw_hz,
         float dll_bw_hz,
         float early_late_space_chips,
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 8c9cb9e51..c5e4c1e98 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
@@ -85,7 +85,7 @@ Gps_L1_Ca_Tcp_Connector_Tracking_cc::Gps_L1_Ca_Tcp_Connector_Tracking_cc(
     int64_t fs_in,
     uint32_t vector_length,
     bool dump,
-    std::string dump_filename,
+    const std::string& dump_filename,
     float early_late_space_chips,
     size_t port_ch0) : gr::block("Gps_L1_Ca_Tcp_Connector_Tracking_cc", gr::io_signature::make(1, 1, sizeof(gr_complex)),
                            gr::io_signature::make(1, 1, sizeof(Gnss_Synchro)))
diff --git a/src/algorithms/tracking/gnuradio_blocks/gps_l1_ca_tcp_connector_tracking_cc.h b/src/algorithms/tracking/gnuradio_blocks/gps_l1_ca_tcp_connector_tracking_cc.h
index 91bdb0890..3acbdb54e 100644
--- a/src/algorithms/tracking/gnuradio_blocks/gps_l1_ca_tcp_connector_tracking_cc.h
+++ b/src/algorithms/tracking/gnuradio_blocks/gps_l1_ca_tcp_connector_tracking_cc.h
@@ -93,7 +93,7 @@ private:
     Gps_L1_Ca_Tcp_Connector_Tracking_cc(
         int64_t fs_in, uint32_t vector_length,
         bool dump,
-        std::string dump_filename,
+        const std::string& dump_filename,
         float early_late_space_chips,
         size_t port_ch0);