diff --git a/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc b/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc
index c5b224f5f..0b65723cc 100644
--- a/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc
+++ b/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc
@@ -1297,7 +1297,7 @@ int32_t dll_pll_veml_tracking_fpga::save_matfile() const
 }
 
 
-void dll_pll_veml_tracking_fpga::set_channel(uint32_t channel, const std::string& device_io_name)
+void dll_pll_veml_tracking_fpga::set_channel(uint32_t channel, const std::string &device_io_name)
 {
     gr::thread::scoped_lock l(d_setlock);
 
diff --git a/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.h b/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.h
index 3a2c863a9..d00385fb9 100644
--- a/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.h
+++ b/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.h
@@ -66,7 +66,7 @@ public:
     /*!
      * \brief Set the channel number and configure some multicorrelator parameters
      */
-    void set_channel(uint32_t channel, const std::string& device_io_name);
+    void set_channel(uint32_t channel, const std::string &device_io_name);
 
     /*!
      * \brief This function is used with two purposes:
diff --git a/src/algorithms/tracking/libs/fpga_multicorrelator.cc b/src/algorithms/tracking/libs/fpga_multicorrelator.cc
index edb87a375..3ca164ed8 100644
--- a/src/algorithms/tracking/libs/fpga_multicorrelator.cc
+++ b/src/algorithms/tracking/libs/fpga_multicorrelator.cc
@@ -192,7 +192,7 @@ bool Fpga_Multicorrelator_8sc::free()
 }
 
 
-void Fpga_Multicorrelator_8sc::open_channel(const std::string& device_io_name, uint32_t channel)
+void Fpga_Multicorrelator_8sc::open_channel(const std::string &device_io_name, uint32_t channel)
 {
     std::cout << "trk device_io_name = " << device_io_name << '\n';
 
diff --git a/src/algorithms/tracking/libs/fpga_multicorrelator.h b/src/algorithms/tracking/libs/fpga_multicorrelator.h
index 42fa151b9..58e554f14 100644
--- a/src/algorithms/tracking/libs/fpga_multicorrelator.h
+++ b/src/algorithms/tracking/libs/fpga_multicorrelator.h
@@ -91,7 +91,7 @@ public:
     /*!
      * \brief Open the FPGA device driver
      */
-    void open_channel(const std::string& device_io_name, uint32_t channel);
+    void open_channel(const std::string &device_io_name, uint32_t channel);
 
     /*!
      * \brief Set the initial sample number where the tracking process begins