diff --git a/target/linux/ixp4xx/config-2.6.33 b/target/linux/ixp4xx/config-2.6.33
index 705334ed8..7107e31c0 100644
--- a/target/linux/ixp4xx/config-2.6.33
+++ b/target/linux/ixp4xx/config-2.6.33
@@ -65,6 +65,7 @@ CONFIG_HAVE_FUNCTION_TRACER=y
 CONFIG_HAVE_GENERIC_DMA_COHERENT=y
 CONFIG_HAVE_IDE=y
 CONFIG_HAVE_KERNEL_GZIP=y
+CONFIG_HAVE_KERNEL_LZMA=y
 CONFIG_HAVE_KERNEL_LZO=y
 CONFIG_HAVE_KPROBES=y
 CONFIG_HAVE_KRETPROBES=y
@@ -87,9 +88,6 @@ CONFIG_IKCONFIG_PROC=y
 CONFIG_INITRAMFS_SOURCE=""
 CONFIG_IP_PIMSM_V1=y
 CONFIG_IP_PIMSM_V2=y
-# CONFIG_ISDN_CAPI is not set
-# CONFIG_ISDN_DRV_GIGASET is not set
-# CONFIG_ISDN_I4L is not set
 # CONFIG_IWMMXT is not set
 CONFIG_IXP4XX_ETH=y
 # CONFIG_IXP4XX_INDIRECT_PCI is not set