diff --git a/nio-server/app/models/Permission.scala b/nio-server/app/models/Permission.scala
index 9dc7547..6c74c7a 100644
--- a/nio-server/app/models/Permission.scala
+++ b/nio-server/app/models/Permission.scala
@@ -68,7 +68,7 @@ case class Permission(key: String, label: String, `type`: PermissionType = OptIn
       <key>{key}</key>
       <label>{label}</label>
       <type>{`type`.print}</type>
-      {validityPeriod.map(p => <validityPeriod>p.toString()</validityPeriod>).getOrElse(new NodeBuffer())}
+      {validityPeriod.map(p => <validityPeriod>{p.toString}</validityPeriod>).getOrElse(new NodeBuffer())}
     </permission>.clean()
 }
 
diff --git a/nio-server/test/models/OrganisationSpec.scala b/nio-server/test/models/OrganisationSpec.scala
index 8da2696..5cd1caa 100644
--- a/nio-server/test/models/OrganisationSpec.scala
+++ b/nio-server/test/models/OrganisationSpec.scala
@@ -219,9 +219,10 @@ class OrganisationSpec extends PlaySpec with AnyWordSpecLike {
     )
 
     val xml = org.asXml()
-
+    println(xml)
     val fromXml = Organisation.fromXml(xml)
 
+    println(fromXml)
     fromXml.map(_.key) mustBe Right(org.key)
   }