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 a89dfefc9..887943acc 100755
--- a/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking.cc
+++ b/src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking.cc
@@ -1100,7 +1100,7 @@ int dll_pll_veml_tracking::save_matfile()
     if (reinterpret_cast<long *>(matfp) != NULL)
         {
             size_t dims[2] = {1, static_cast<size_t>(num_epoch)};
-            matvar = Mat_VarCreate("abs_VE", MAT_C_SINGLE, MAT_T_SINGLE, 2, dims, abs_E, 0);
+            matvar = Mat_VarCreate("abs_VE", MAT_C_SINGLE, MAT_T_SINGLE, 2, dims, abs_VE, 0);
             Mat_VarWrite(matfp, matvar, MAT_COMPRESSION_ZLIB);  // or MAT_COMPRESSION_NONE
             Mat_VarFree(matvar);
 
@@ -1116,7 +1116,7 @@ int dll_pll_veml_tracking::save_matfile()
             Mat_VarWrite(matfp, matvar, MAT_COMPRESSION_ZLIB);  // or MAT_COMPRESSION_NONE
             Mat_VarFree(matvar);
 
-            matvar = Mat_VarCreate("abs_VL", MAT_C_SINGLE, MAT_T_SINGLE, 2, dims, abs_E, 0);
+            matvar = Mat_VarCreate("abs_VL", MAT_C_SINGLE, MAT_T_SINGLE, 2, dims, abs_VL, 0);
             Mat_VarWrite(matfp, matvar, MAT_COMPRESSION_ZLIB);  // or MAT_COMPRESSION_NONE
             Mat_VarFree(matvar);