diff --git a/openair1/SIMULATION/NR_PHY/dlschsim.c b/openair1/SIMULATION/NR_PHY/dlschsim.c
index f566b93d9c..a0dd1b433d 100644
--- a/openair1/SIMULATION/NR_PHY/dlschsim.c
+++ b/openair1/SIMULATION/NR_PHY/dlschsim.c
@@ -118,6 +118,7 @@ int main(int argc, char **argv)
         double DS_TDL = .03;
 	cpuf = get_cpu_freq_GHz();
 	char gNBthreads[128]="n";
+        int Tbslbrm = 950984;
 
 	if (load_configmodule(argc, argv, CONFIG_ENABLECMDLINEONLY) == 0) {
 		exit_fun("[NR_DLSCHSIM] Error, configuration module init failed\n");
@@ -472,6 +473,7 @@ int main(int argc, char **argv)
 	rel15->dlDmrsSymbPos = 4;
 	rel15->mcsIndex[0] = Imcs;
         rel15->numDmrsCdmGrpsNoData = 1;
+        rel15->maintenance_parms_v3.tbSizeLbrmBytes = Tbslbrm;
 	double *modulated_input = malloc16(sizeof(double) * 16 * 68 * 384); // [hna] 16 segments, 68*Zc
 	short *channel_output_fixed = malloc16(sizeof(short) * 16 * 68 * 384);
 	short *channel_output_uncoded = malloc16(sizeof(unsigned short) * 16 * 68 * 384);
@@ -494,6 +496,7 @@ int main(int argc, char **argv)
 	harq_process->dmrsConfigType = NFAPI_NR_DMRS_TYPE1;
 	harq_process->dlDmrsSymbPos = 4;
 	harq_process->n_dmrs_cdm_groups = 1;
+        harq_process->tbslbrm = Tbslbrm;
 	printf("harq process ue mcs = %d Qm = %d, symb %d\n", harq_process->mcs, harq_process->Qm, nb_symb_sch);
 	unsigned char *test_input;
 	test_input = (unsigned char *) malloc16(sizeof(unsigned char) * TBS / 8);