diff --git a/tools/sdbusplus/event.py b/tools/sdbusplus/event.py
index 66bcdb5..0dedefb 100644
--- a/tools/sdbusplus/event.py
+++ b/tools/sdbusplus/event.py
@@ -224,7 +224,7 @@
             "@odata.type": "#MessageRegistry.v1_6_3.MessageRegistry",
             "Id": f"{registryName}.{self.version}",
             "Language": f"{language}",
-            "Message": messages,
+            "Messages": messages,
             "Name": f"OpenBMC Message Registry for {self.name}",
             "OwningEntity": "OpenBMC",
             "RegistryPrefix": f"{registryName}",