diff --git a/zone.go b/zone.go
index 36b0751a..f21dd6a5 100644
--- a/zone.go
+++ b/zone.go
@@ -114,7 +114,7 @@ func toRadixName(d string) string {
 		}
 		s = strings.ToLower(l) + "." + s
 	}
-	return s
+	return "." + s
 }
 
 // String returns a string representation of a ZoneData. There is no