diff --git a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c
index 014ebdbdd5..68d62e910a 100644
--- a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c
+++ b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c
@@ -697,7 +697,10 @@ void nr_get_Msg3alloc(module_id_t module_id,
     int mu = ubwp ?
       ubwp->bwp_Common->genericParameters.subcarrierSpacing :
       scc->uplinkConfigCommon->initialUplinkBWP->genericParameters.subcarrierSpacing;
-    int StartSymbolIndex, NrOfSymbols, startSymbolAndLength, temp_slot;
+    int StartSymbolIndex = 0;
+    int NrOfSymbols = 0;
+    int startSymbolAndLength = 0;
+    int temp_slot = 0;
     ra->Msg3_tda_id = 16; // initialization to a value above limit
 
     NR_PUSCH_TimeDomainResourceAllocationList_t *pusch_TimeDomainAllocationList= ubwp ?
diff --git a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_ulsch.c b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_ulsch.c
index cfd032e3d8..4f007aec50 100644
--- a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_ulsch.c
+++ b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_ulsch.c
@@ -969,7 +969,7 @@ void pf_ul(module_id_t module_id,
   gNB_MAC_INST *nrmac = RC.nrmac[module_id];
   NR_ServingCellConfigCommon_t *scc = nrmac->common_channels[CC_id].ServingCellConfigCommon;
   NR_UE_info_t *UE_info = &nrmac->UE_info;
-  const int min_rb = 16;
+  const int min_rb = 20;
   float coeff_ue[MAX_MOBILES_PER_GNB];
   // UEs that could be scheduled
   int ue_array[MAX_MOBILES_PER_GNB];