diff --git a/openair1/PHY/CODING/nrLDPC_encoder/ldpc_encoder_optim.c b/openair1/PHY/CODING/nrLDPC_encoder/ldpc_encoder_optim.c
index bf663e0204..deaba29e0d 100644
--- a/openair1/PHY/CODING/nrLDPC_encoder/ldpc_encoder_optim.c
+++ b/openair1/PHY/CODING/nrLDPC_encoder/ldpc_encoder_optim.c
@@ -101,7 +101,7 @@ int LDPCencoder(uint8_t **test_input, uint8_t **channel_input, encoder_implempar
 
   if(impp->tinput != NULL) stop_meas(impp->tinput);
 
-  if ((BG==1 && Zc>=176) || (BG==2 && Zc>=64)) { 
+  if ((BG==1 && Zc>=176) || (BG==2 && Zc>=72)) {
     // extend matrix
     if(impp->tprep != NULL) start_meas(impp->tprep);
     if(impp->tprep != NULL) stop_meas(impp->tprep);
diff --git a/openair1/PHY/CODING/nrLDPC_encoder/ldpc_encoder_optim8seg.c b/openair1/PHY/CODING/nrLDPC_encoder/ldpc_encoder_optim8seg.c
index 11aaf731d5..a45aac2474 100644
--- a/openair1/PHY/CODING/nrLDPC_encoder/ldpc_encoder_optim8seg.c
+++ b/openair1/PHY/CODING/nrLDPC_encoder/ldpc_encoder_optim8seg.c
@@ -143,7 +143,7 @@ int LDPCencoder(uint8_t **test_input, uint8_t **channel_input, encoder_implempar
 
   if(impp->tinput != NULL) stop_meas(impp->tinput);
 
-  if ((BG==1 && Zc>=176) || (BG==2 && Zc>=64)) { 
+  if ((BG==1 && Zc>=176) || (BG==2 && Zc>=72)) {
     // extend matrix
     if(impp->tprep != NULL) start_meas(impp->tprep);
     if(impp->tprep != NULL) stop_meas(impp->tprep);
diff --git a/openair1/PHY/CODING/nrLDPC_encoder/ldpc_encoder_optim8segmulti.c b/openair1/PHY/CODING/nrLDPC_encoder/ldpc_encoder_optim8segmulti.c
index 6b48fee6fa..b91d1f5825 100644
--- a/openair1/PHY/CODING/nrLDPC_encoder/ldpc_encoder_optim8segmulti.c
+++ b/openair1/PHY/CODING/nrLDPC_encoder/ldpc_encoder_optim8segmulti.c
@@ -151,7 +151,7 @@ int LDPCencoder(uint8_t **input, uint8_t **output, encoder_implemparams_t *impp)
 
   if(impp->tinput != NULL) stop_meas(impp->tinput);
 
-  if ((BG==1 && Zc>=176) || (BG==2 && Zc>=64)) {
+  if ((BG==1 && Zc>=176) || (BG==2 && Zc>=72)) {
     // extend matrix
     if(impp->tprep != NULL) start_meas(impp->tprep);
     if(impp->tprep != NULL) stop_meas(impp->tprep);