diff --git a/openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c b/openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c
index 20fa4e5836..6c8a0f337f 100644
--- a/openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c
+++ b/openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c
@@ -4081,7 +4081,7 @@ int nr_ue_process_rar(nr_downlink_indication_t *dl_info, int pdu_id)
     // MCS
     rar_grant.mcs = (unsigned char) (rar->UL_GRANT_4 >> 4);
     // time alloc
-    rar_grant.Msg3_t_alloc = (unsigned char) (rar->UL_GRANT_3 & 0x07);
+    rar_grant.Msg3_t_alloc = (unsigned char) (rar->UL_GRANT_3 & 0x0f);
     // frequency alloc
     rar_grant.Msg3_f_alloc = (uint16_t) ((rar->UL_GRANT_3 >> 4) | (rar->UL_GRANT_2 << 4) | ((rar->UL_GRANT_1 & 0x03) << 12));
     // frequency hopping
diff --git a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c
index d2b9f2331e..e0c5879e9c 100644
--- a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c
+++ b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c
@@ -2224,7 +2224,7 @@ static void nr_fill_rar(uint8_t Mod_idP, NR_RA_t *ra, uint8_t *dlsch_buffer, nfa
 
   int mcs = (unsigned char) (rar->UL_GRANT_4 >> 4);
   // time alloc
-  int Msg3_t_alloc = (unsigned char) (rar->UL_GRANT_3 & 0x07);
+  int Msg3_t_alloc = (unsigned char) (rar->UL_GRANT_3 & 0x0f);
   // frequency alloc
   int Msg3_f_alloc = (uint16_t) ((rar->UL_GRANT_3 >> 4) | (rar->UL_GRANT_2 << 4) | ((rar->UL_GRANT_1 & 0x03) << 12));
   // frequency hopping