diff --git a/src/dnscode/dnscode.py b/src/dnscode/dnscode.py
index 5779662..aa4b73c 100644
--- a/src/dnscode/dnscode.py
+++ b/src/dnscode/dnscode.py
@@ -169,7 +169,7 @@ class SOA(Record):
 		self.retry	= retry
 		self.expire	= expire
 		self.ttl	= ttl
-		self.data	= f"{self.mname} {self.rname} {self.serial} {self.refresh} {self.retry} {self.expire}"
+		self.data	= f"{self.mname} {self.rname} {self.serial} {self.refresh} {self.retry} {self.expire} {self.refresh}"
 
 @dataclass
 class SRV(Record):