diff --git a/src/osmo_gsm_tester/templates/amarisoft_enb.cfg.tmpl b/src/osmo_gsm_tester/templates/amarisoft_enb.cfg.tmpl
index 7896ecb5..64d16f99 100644
--- a/src/osmo_gsm_tester/templates/amarisoft_enb.cfg.tmpl
+++ b/src/osmo_gsm_tester/templates/amarisoft_enb.cfg.tmpl
@@ -93,7 +93,7 @@
   cell_default: {
     /* Broadcasted PLMN identities */
     plmn_list: [
-      "${enb.mcc}${enb.mnc}",
+      "${'{0:03}'.format(int(enb.mcc))}${'{0:02}'.format(int(enb.mnc))}",
     ],
 
 % if int(enb.get('transmission_mode')) == 1:
diff --git a/src/osmo_gsm_tester/templates/amarisoft_ltemme.cfg.tmpl b/src/osmo_gsm_tester/templates/amarisoft_ltemme.cfg.tmpl
index fb3ec984..3c83bedc 100644
--- a/src/osmo_gsm_tester/templates/amarisoft_ltemme.cfg.tmpl
+++ b/src/osmo_gsm_tester/templates/amarisoft_ltemme.cfg.tmpl
@@ -39,7 +39,7 @@
 
   s1ap_bind_addr: "${epc.run_addr}",
 
-  plmn: "${epc.mcc}${epc.mnc}",
+  plmn: "${'{0:03}'.format(int(epc.mcc))}${'{0:02}'.format(int(epc.mnc))}",
   mme_group_id: 32769,
   mme_code: 1,