diff --git a/target/linux/ixp4xx/config-default b/target/linux/ixp4xx/config-default
index 130c95cffe..15c151796e 100644
--- a/target/linux/ixp4xx/config-default
+++ b/target/linux/ixp4xx/config-default
@@ -147,6 +147,7 @@ CONFIG_I2C_GPIO=y
 # CONFIG_IDE is not set
 CONFIG_INITRAMFS_SOURCE=""
 CONFIG_INPUT=m
+# CONFIG_INPUT_IXP4XX_BEEPER is not set
 # CONFIG_IP6_NF_MANGLE is not set
 # CONFIG_IP6_NF_MATCH_EUI64 is not set
 # CONFIG_IP6_NF_MATCH_FRAG is not set