@@ -1,10 +1,10 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <serialization xmlns='https://objfw.nil.im/serialization' version='1'>
   <OFMutableDictionary>
     <key>
-      <OFUUID>01234567-89AB-CDEF-FEDC-BA9876543210</OFUUID>
+      <OFUUID>01234567-89ab-cdef-fedc-ba9876543210</OFUUID>
     </key>
     <object>
       <OFString>uuid</OFString>
     </object>
     <key>