diff --git a/src/algorithms/telemetry_decoder/gnuradio_blocks/beidou_b1i_telemetry_decoder_gs.cc b/src/algorithms/telemetry_decoder/gnuradio_blocks/beidou_b1i_telemetry_decoder_gs.cc
index 7adb2b354..be245a931 100644
--- a/src/algorithms/telemetry_decoder/gnuradio_blocks/beidou_b1i_telemetry_decoder_gs.cc
+++ b/src/algorithms/telemetry_decoder/gnuradio_blocks/beidou_b1i_telemetry_decoder_gs.cc
@@ -574,7 +574,7 @@ int beidou_b1i_telemetry_decoder_gs::general_work(int noutput_items __attribute_
                     d_dump_file.write(reinterpret_cast<char *>(&tmp_double), sizeof(double));
                     tmp_ulong_int = current_symbol.Tracking_sample_counter;
                     d_dump_file.write(reinterpret_cast<char *>(&tmp_ulong_int), sizeof(uint64_t));
-                    tmp_double = current_symbol.Code_phase_samples;
+                    tmp_double = d_nav.d_SOW;
                     d_dump_file.write(reinterpret_cast<char *>(&tmp_double), sizeof(double));
                 }
             catch (const std::ifstream::failure &e)
diff --git a/src/utils/matlab/gps_l1_ca_telemetry_plot_sample.m b/src/utils/matlab/gps_l1_ca_telemetry_plot_sample.m
index baaad4bd7..fb2e956ca 100644
--- a/src/utils/matlab/gps_l1_ca_telemetry_plot_sample.m
+++ b/src/utils/matlab/gps_l1_ca_telemetry_plot_sample.m
@@ -26,7 +26,7 @@
 % -------------------------------------------------------------------------
 %
 
-close all;
+%close all;
 
 samplingFreq       = 25000000;     %[Hz]
 channels=[0:9];
diff --git a/src/utils/matlab/libs/gps_l1_ca_read_telemetry_dump.m b/src/utils/matlab/libs/gps_l1_ca_read_telemetry_dump.m
index c7274f1f5..c5e4b71d3 100644
--- a/src/utils/matlab/libs/gps_l1_ca_read_telemetry_dump.m
+++ b/src/utils/matlab/libs/gps_l1_ca_read_telemetry_dump.m
@@ -47,13 +47,13 @@ end
 f = fopen (filename, 'rb');
 if (f < 0)
 else
-    telemetry.preamble_delay_ms = fread (f, count, 'float64',skip_bytes_each_read-double_size_bytes);
+    telemetry.tow_current_symbol_ms = fread (f, count, 'float64',skip_bytes_each_read-double_size_bytes);
     bytes_shift=bytes_shift+double_size_bytes;
     fseek(f,bytes_shift,'bof'); % move to next interleaved
-    telemetry.prn_delay_ms = fread (f, count, 'uint64',skip_bytes_each_read-double_size_bytes);
+    telemetry.tracking_sample_counter = fread (f, count, 'uint64',skip_bytes_each_read-double_size_bytes);
     bytes_shift=bytes_shift+double_size_bytes;
     fseek(f,bytes_shift,'bof'); % move to next interleaved
-    telemetry.Preamble_symbol_counter = fread (f, count, 'float64',skip_bytes_each_read-double_size_bytes);
+    telemetry.tow = fread (f, count, 'float64',skip_bytes_each_read-double_size_bytes);
     bytes_shift=bytes_shift+double_size_bytes;
     fseek(f,bytes_shift,'bof'); % move to next interleaved