diff --git a/xyz/openbmc_project/Network/MACAddress.interface.yaml b/xyz/openbmc_project/Network/MACAddress.interface.yaml
index 96f4177..df092f2 100644
--- a/xyz/openbmc_project/Network/MACAddress.interface.yaml
+++ b/xyz/openbmc_project/Network/MACAddress.interface.yaml
@@ -8,3 +8,4 @@
           MAC address of the ethernet interface.
       errors:
         - xyz.openbmc_project.Common.Error.InvalidArgument
+        - xyz.openbmc_project.Common.Error.InternalFailure