diff --git a/netbox/dcim/api/serializers_/device_components.py b/netbox/dcim/api/serializers_/device_components.py
index 0ed6b47ff..0e5fb1c41 100644
--- a/netbox/dcim/api/serializers_/device_components.py
+++ b/netbox/dcim/api/serializers_/device_components.py
@@ -222,7 +222,8 @@ class InterfaceSerializer(NetBoxModelSerializer, CabledObjectSerializer, Connect
         required=False,
         default=None,
         allow_blank=True,
-        allow_null=True
+        allow_null=True,
+        read_only=True
     )
     wwn = serializers.CharField(required=False, default=None, allow_blank=True, allow_null=True)
 
diff --git a/netbox/virtualization/api/serializers_/virtualmachines.py b/netbox/virtualization/api/serializers_/virtualmachines.py
index 2c00cac96..643f737c1 100644
--- a/netbox/virtualization/api/serializers_/virtualmachines.py
+++ b/netbox/virtualization/api/serializers_/virtualmachines.py
@@ -97,7 +97,8 @@ class VMInterfaceSerializer(NetBoxModelSerializer):
     mac_address = serializers.CharField(
         required=False,
         default=None,
-        allow_null=True
+        allow_null=True,
+        read_only=True
     )
 
     class Meta: