diff --git a/src/xen/xend_internal.c b/src/xen/xend_internal.c
index 957cd17e9e..0a7fb4806e 100644
--- a/src/xen/xend_internal.c
+++ b/src/xen/xend_internal.c
@@ -56,7 +56,7 @@
  * The number of Xen scheduler parameters
  */
 
-#define XEND_RCV_BUF_MAX_LEN 65536
+#define XEND_RCV_BUF_MAX_LEN (256 * 1024)
 
 static int
 virDomainXMLDevID(virDomainPtr domain,