diff --git a/src/remote/remote_protocol.x b/src/remote/remote_protocol.x
index 1f9d58307df67627a4e553d8636945fdd0f096d8..ab9b83dc48048a02698c9c3b4476b765a3a67a5b 100644
--- a/src/remote/remote_protocol.x
+++ b/src/remote/remote_protocol.x
@@ -86,7 +86,7 @@ const REMOTE_VCPUINFO_MAX = 16384;
 const REMOTE_CPUMAPS_MAX = 8388608;
 
 /* Upper limit on migrate cookie. */
-const REMOTE_MIGRATE_COOKIE_MAX = 16384;
+const REMOTE_MIGRATE_COOKIE_MAX = 4194304;
 
 /* Upper limit on lists of networks. */
 const REMOTE_NETWORK_LIST_MAX = 16384;