diff --git a/README.md b/README.md
index 9e4d9f63e..a1d384a2a 100644
--- a/README.md
+++ b/README.md
@@ -2,14 +2,29 @@
 
 If you find Open5GS useful for work, please consider supporting this Open Source project by [Becoming a sponsor](https://github.com/sponsors/acetcom). To manage the funding transactions transparently, you can donate through [OpenCollective](https://opencollective.com/open5gs).
 
-<h3 align="center">Special Sponsor</h3>
-<!--special start-->
+<style>
+table, th, td {
+  padding: 10px;
+}
+</style>
 
-<p align="center">
+<h3 align="center">Special Sponsor</h3>
+<table>
+  <tbody>
+    <tr>
+      <td align="center" valign="middle">
   <a href="https://nextepc.com/" target="_blank">
     <img width="260px" src="https://open5gs.org/assets/img/nextepc_logo.jpg">
   </a>
-</p>
+      </td>
+      <td align="center" valign="middle">
+  <a href="https://5g.eee.strath.ac.uk/" target="_blank">
+    <img width="260px" src="https://open5gs.org/assets/img/strath.png">
+  </a>
+      </td>
+    </tr>
+  </tbody>
+</table>
 
 <h3 align="center">Sponsors</h3>
 <table>
diff --git a/src/mme/s1ap-build.c b/src/mme/s1ap-build.c
index 7fce7e737..75027499b 100644
--- a/src/mme/s1ap-build.c
+++ b/src/mme/s1ap-build.c
@@ -1158,6 +1158,7 @@ ogs_pkbuf_t *s1ap_build_e_rab_release_command(
 
     ENB_UE_S1AP_ID = &ie->value.choice.ENB_UE_S1AP_ID;
 
+#if 0 /* It's redundant */
     ie = CALLOC(1, sizeof(S1AP_E_RABReleaseCommandIEs_t));
     ASN_SEQUENCE_ADD(&E_RABReleaseCommand->protocolIEs, ie);
 
@@ -1167,6 +1168,7 @@ ogs_pkbuf_t *s1ap_build_e_rab_release_command(
         S1AP_E_RABReleaseCommandIEs__value_PR_UEAggregateMaximumBitrate;
 
     UEAggregateMaximumBitrate = &ie->value.choice.UEAggregateMaximumBitrate;
+#endif
 
     ie = CALLOC(1, sizeof(S1AP_E_RABReleaseCommandIEs_t));
     ASN_SEQUENCE_ADD(&E_RABReleaseCommand->protocolIEs, ie);
@@ -1192,12 +1194,14 @@ ogs_pkbuf_t *s1ap_build_e_rab_release_command(
     *MME_UE_S1AP_ID = enb_ue->mme_ue_s1ap_id;
     *ENB_UE_S1AP_ID = enb_ue->enb_ue_s1ap_id;
 
-    asn_uint642INTEGER(
-            &UEAggregateMaximumBitrate->uEaggregateMaximumBitRateUL, 
-            subscription_data->ambr.uplink);
-    asn_uint642INTEGER(
-            &UEAggregateMaximumBitrate->uEaggregateMaximumBitRateDL, 
-            subscription_data->ambr.downlink);
+    if (UEAggregateMaximumBitrate) {
+        asn_uint642INTEGER(
+                &UEAggregateMaximumBitrate->uEaggregateMaximumBitRateUL,
+                subscription_data->ambr.uplink);
+        asn_uint642INTEGER(
+                &UEAggregateMaximumBitrate->uEaggregateMaximumBitRateDL,
+                subscription_data->ambr.downlink);
+    }
 
     item = CALLOC(1, sizeof(S1AP_E_RABItemIEs_t));
     ASN_SEQUENCE_ADD(&E_RABList->list, item);