diff --git a/openair1/SCHED_UE/phy_procedures_lte_ue.c b/openair1/SCHED_UE/phy_procedures_lte_ue.c
index 1b9bdefed6..1f165380d4 100644
--- a/openair1/SCHED_UE/phy_procedures_lte_ue.c
+++ b/openair1/SCHED_UE/phy_procedures_lte_ue.c
@@ -2980,7 +2980,7 @@ void ue_pmch_procedures(PHY_VARS_UE *ue,
           ue->dlsch_mch_received_sf[subframe_rx%5][0]=0;
         } else {
           ue->dlsch_mch_received[0]+=1;
-          ue->dlsch_mch_received_sf[subframe_rx][0]=1;
+          ue->dlsch_mch_received_sf[subframe_rx % 5][0] = 1;
         }
       } // decoding sucessful
     } // pmch_mcs>=0