diff --git a/src/as/com/threerings/presents/net/Credentials.as b/src/as/com/threerings/presents/net/Credentials.as
index 0b6964a73..9f1eb5d08 100644
--- a/src/as/com/threerings/presents/net/Credentials.as
+++ b/src/as/com/threerings/presents/net/Credentials.as
@@ -13,13 +13,13 @@ public class Credentials
 
     // documentation inherited from interface Streamable
     public function writeObject (out :ObjectOutputStream) :void
-        throws IOError
+        //throws IOError
     {
     }
 
     // documentation inherited from interface Streamable
     public function readObject (in :ObjectInputStream) :void
-        throws IOError
+        //throws IOError
     {
     }