diff --git a/openair1/SIMULATION/NR_PHY/dlsim.c b/openair1/SIMULATION/NR_PHY/dlsim.c
index 1cdf186c8e..a1fbdc8161 100644
--- a/openair1/SIMULATION/NR_PHY/dlsim.c
+++ b/openair1/SIMULATION/NR_PHY/dlsim.c
@@ -553,6 +553,8 @@ int main(int argc, char **argv)
 
   RC.nb_nr_macrlc_inst = 1;
   RC.nb_nr_mac_CC = (int*)malloc(RC.nb_nr_macrlc_inst*sizeof(int));
+  for (i = 0; i < RC.nb_nr_macrlc_inst; i++)
+    RC.nb_nr_mac_CC[i] = 1;
   mac_top_init_gNB();
   gNB_mac = RC.nrmac[0];