diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h
index 1d22453a9..9037b13d7 100644
--- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h
@@ -82,7 +82,7 @@ struct ag71xx_desc {
 	u32	ctrl;
 #define DESC_EMPTY	BIT(31)
 #define DESC_MORE	BIT(24)
-#define DESC_PKTLEN_M	0x1fff
+#define DESC_PKTLEN_M	0xfff
 	u32	next;
 	u32	pad;
 };