diff --git a/openair2/COMMON/s1ap_messages_types.h b/openair2/COMMON/s1ap_messages_types.h
index 4a5f492b0b..874286b590 100644
--- a/openair2/COMMON/s1ap_messages_types.h
+++ b/openair2/COMMON/s1ap_messages_types.h
@@ -325,12 +325,14 @@ typedef struct s1ap_register_enb_req_s {
   /* Tracking area code */
   uint16_t tac;
 
+#define PLMN_LIST_MAX_SIZE 6
   /* Mobile Country Code
    * Mobile Network Code
    */
-  uint16_t mcc;
-  uint16_t mnc;
-  uint8_t  mnc_digit_length;
+  uint16_t mcc[PLMN_LIST_MAX_SIZE];
+  uint16_t mnc[PLMN_LIST_MAX_SIZE];
+  uint8_t  mnc_digit_length[PLMN_LIST_MAX_SIZE];
+  uint8_t  num_plmn;
 
   /* Default Paging DRX of the eNB as defined in TS 36.304 */
   paging_drx_t default_drx;