diff --git a/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking.cc b/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking.cc
index 7841c9a46..373173a8b 100644
--- a/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking.cc
+++ b/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking.cc
@@ -113,7 +113,6 @@ dll_pll_veml_tracking::dll_pll_veml_tracking(const Dll_Pll_Conf &conf_) : gr::bl
     d_secondary_code_string = nullptr;
     d_data_secondary_code_length = 0U;
     d_data_secondary_code_string = nullptr;
-    d_preambles_symbols = nullptr;
     d_preamble_length_symbols = 0;
     signal_type = std::string(trk_parameters.signal);
 
@@ -754,11 +753,6 @@ void dll_pll_veml_tracking::start_tracking()
 
 dll_pll_veml_tracking::~dll_pll_veml_tracking()
 {
-    if (signal_type == "1C")
-        {
-            volk_gnsssdr_free(d_preambles_symbols);
-        }
-
     if (d_dump_file.is_open())
         {
             try
diff --git a/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking.h b/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking.h
index cfb8ff79b..babdf5f66 100644
--- a/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking.h
+++ b/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking.h
@@ -111,7 +111,6 @@ private:
     std::string *d_data_secondary_code_string;
     std::string signal_pretty_name;
 
-    int32_t *d_preambles_symbols;
     int32_t d_preamble_length_symbols;
 
     // dll filter buffer