diff --git a/drivers/net/ppp_async.c b/drivers/net/ppp_async.c
index 30b1b33..c311fa6 100644
--- a/drivers/net/ppp_async.c
+++ b/drivers/net/ppp_async.c
@@ -36,7 +36,7 @@
 
 #define PPP_VERSION	"2.4.2"
 
-#define OBUFSIZE	256
+#define OBUFSIZE	4096
 
 /* Structure for storing local state. */
 struct asyncppp {