diff --git a/openair1/PHY/NR_ESTIMATION/nr_ul_channel_estimation.c b/openair1/PHY/NR_ESTIMATION/nr_ul_channel_estimation.c
index 682570bf67..1ba55f3df3 100644
--- a/openair1/PHY/NR_ESTIMATION/nr_ul_channel_estimation.c
+++ b/openair1/PHY/NR_ESTIMATION/nr_ul_channel_estimation.c
@@ -765,7 +765,7 @@ int nr_pusch_channel_estimation(PHY_VARS_gNB *gNB,
                                          8);
       ul_ch -= 24;
 
-      for (pilot_cnt=0; pilot_cnt<4*nb_rb_pusch; pilot_cnt += 4) {
+      for (pilot_cnt=4; pilot_cnt<4*(nb_rb_pusch-1); pilot_cnt += 4) {
 
         ch_0 = ((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1])>>15;
         ch_1 = ((int32_t)pil[0]*rxF[1] + (int32_t)pil[1]*rxF[0])>>15;
diff --git a/openair1/PHY/NR_UE_ESTIMATION/nr_dl_channel_estimation.c b/openair1/PHY/NR_UE_ESTIMATION/nr_dl_channel_estimation.c
index 56eafba87e..fea6c4d45c 100644
--- a/openair1/PHY/NR_UE_ESTIMATION/nr_dl_channel_estimation.c
+++ b/openair1/PHY/NR_UE_ESTIMATION/nr_dl_channel_estimation.c
@@ -1263,7 +1263,7 @@ int nr_pdsch_channel_estimation(PHY_VARS_NR_UE *ue,
                                          8);
       dl_ch -= 24;
 
-      for (pilot_cnt=0; pilot_cnt<6*nb_rb_pdsch; pilot_cnt += 6) {
+      for (pilot_cnt=6; pilot_cnt<6*(nb_rb_pdsch-1); pilot_cnt += 6) {
 
         ch_0 = ((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1])>>15;
         ch_1 = ((int32_t)pil[0]*rxF[1] + (int32_t)pil[1]*rxF[0])>>15;
@@ -1443,7 +1443,7 @@ int nr_pdsch_channel_estimation(PHY_VARS_NR_UE *ue,
                                          8);
       dl_ch -= 24;
 
-      for (pilot_cnt=0; pilot_cnt<4*nb_rb_pdsch; pilot_cnt += 4) {
+      for (pilot_cnt=4; pilot_cnt<4*(nb_rb_pdsch-1); pilot_cnt += 4) {
         int32_t ch_0, ch_1;
 
         ch_0 = ((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1])>>15;