diff --git a/target/linux/ramips/files/arch/mips/ralink/rt305x/mach-dir-300-revb.c b/target/linux/ramips/files/arch/mips/ralink/rt305x/mach-dir-300-revb.c
index d443e4ff52..7aed11d022 100644
--- a/target/linux/ramips/files/arch/mips/ralink/rt305x/mach-dir-300-revb.c
+++ b/target/linux/ramips/files/arch/mips/ralink/rt305x/mach-dir-300-revb.c
@@ -51,7 +51,7 @@ static struct mtd_partition dir_300b_partitions[] = {
 	}, {
 		.name	= "kernel",
 		.offset	= 0x050000,
-		.size	= 0x090000,
+		.size	= 0x0f0000,
 	}, {
 		.name	= "rootfs",
 		.offset	= 0x140000,