diff --git a/target/linux/ixp4xx/config-4.9 b/target/linux/ixp4xx/config-4.9
index c9b1be9304..5623f907a6 100644
--- a/target/linux/ixp4xx/config-4.9
+++ b/target/linux/ixp4xx/config-4.9
@@ -150,8 +150,6 @@ CONFIG_IXP4XX_WATCHDOG=y
 CONFIG_LEDS_FSG=y
 CONFIG_LEDS_GPIO=y
 CONFIG_LEDS_LATCH=y
-CONFIG_LEGACY_PTYS=y
-CONFIG_LEGACY_PTY_COUNT=256
 CONFIG_LZO_COMPRESS=y
 CONFIG_LZO_DECOMPRESS=y
 CONFIG_MACH_AP1000=y