diff --git a/src/mesh/NodeDB.cpp b/src/mesh/NodeDB.cpp
index 3af6c6a45..fa736e08a 100644
--- a/src/mesh/NodeDB.cpp
+++ b/src/mesh/NodeDB.cpp
@@ -292,10 +292,10 @@ void NodeDB::installDefaultConfig()
     config.lora.ignore_mqtt = false;
 #endif
 #ifdef ADMIN_KEY_USERPREFS
-    memcpy(config.security.admin_key.bytes, admin_key_userprefs, 32);
-    config.security.admin_key.size = 32;
+    memcpy(config.security.admin_key[0].bytes, admin_key_userprefs, 32);
+    config.security.admin_key[0].size = 32;
 #else
-    config.security.admin_key.size = 0;
+    config.security.admin_key[0].size = 0;
 #endif
     config.security.public_key.size = 0;
     config.security.private_key.size = 0;
diff --git a/src/modules/AdminModule.cpp b/src/modules/AdminModule.cpp
index ef60a4bf2..b63eca396 100644
--- a/src/modules/AdminModule.cpp
+++ b/src/modules/AdminModule.cpp
@@ -75,7 +75,7 @@ bool AdminModule::handleReceivedProtobuf(const meshtastic_MeshPacket &mp, meshta
     // and only allowing responses from that remote.
     if (!((mp.from == 0 && !config.security.is_managed) || messageIsResponse(r) ||
           (strcasecmp(ch->settings.name, Channels::adminChannel) == 0 && config.security.admin_channel_enabled) ||
-          (mp.pki_encrypted && memcmp(mp.public_key.bytes, config.security.admin_key.bytes, 32) == 0))) {
+          (mp.pki_encrypted && memcmp(mp.public_key.bytes, config.security.admin_key[0].bytes, 32) == 0))) {
         LOG_INFO("Ignoring admin payload %i\n", r->which_payload_variant);
         return handled;
     }