diff --git a/sys/dev/hyperv/netvsc/if_hnvar.h b/sys/dev/hyperv/netvsc/if_hnvar.h
index 6dc5b80b5eb..00ddd29ccd5 100644
--- a/sys/dev/hyperv/netvsc/if_hnvar.h
+++ b/sys/dev/hyperv/netvsc/if_hnvar.h
@@ -39,7 +39,7 @@
 /* Claimed to be 12232B */
 #define HN_MTU_MAX			(9 * 1024)
 
-#define HN_TXBR_SIZE			(128 * PAGE_SIZE)
+#define HN_TXBR_SIZE			(256 * PAGE_SIZE)
 #define HN_RXBR_SIZE			(128 * PAGE_SIZE)
 
 #define HN_XACT_REQ_PGCNT		2