diff --git a/deevirt_schema/libvirt/dom/events.py b/deevirt_schema/libvirt/dom/events.py
index 67b2756..1136179 100644
--- a/deevirt_schema/libvirt/dom/events.py
+++ b/deevirt_schema/libvirt/dom/events.py
@@ -78,7 +78,7 @@ class LifeCycle(BaseModel):
     datacenter_id:UUID4 = Field()
     vm_id:UUID = Field()
     action:EventType = Field()
-    config:Optional[str] = Field()
+    config:Optional[str] = Field(default=None)
 
 class GraphicsAddr(BaseModel):
     family:int = Field()