diff --git a/openair1/PHY/NR_UE_TRANSPORT/dci_nr.c b/openair1/PHY/NR_UE_TRANSPORT/dci_nr.c
index 53456bb691..9d51bc0e21 100644
--- a/openair1/PHY/NR_UE_TRANSPORT/dci_nr.c
+++ b/openair1/PHY/NR_UE_TRANSPORT/dci_nr.c
@@ -372,8 +372,12 @@ void nr_pdcch_extract_rbs_single(int32_t **rxdataF,
     c_rb = n_BWP_start;
     for (int rb=0;rb<coreset_nbr_rb;rb++,c_rb++) {
       c_rb_by6 = c_rb/6;
+
       // skip zeros in frequency domain bitmap
-      while ((coreset_freq_dom[c_rb_by6>>3] & (1<<(c_rb_by6&7))) == 0) c_rb+=6;
+      while ((coreset_freq_dom[c_rb_by6>>3] & (1<<(7-(c_rb_by6&7)))) == 0){
+        c_rb+=6;
+        c_rb_by6 = c_rb/6;
+      }
 
       LOG_DDD("c_rb=%d\n",c_rb);
       rxF=NULL;