diff --git a/target/linux/adm5120/router_le/config-2.6.25 b/target/linux/adm5120/router_le/config-2.6.25
index b1f70547b..25ca729b1 100644
--- a/target/linux/adm5120/router_le/config-2.6.25
+++ b/target/linux/adm5120/router_le/config-2.6.25
@@ -278,4 +278,14 @@ CONFIG_USB_OHCI_HCD=m
 CONFIG_VIDEO_V4L1=y
 CONFIG_VIDEO_V4L2_COMMON=m
 CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_YAFFS_9BYTE_TAGS=y
+# CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED is not set
+CONFIG_YAFFS_AUTO_YAFFS2=y
+CONFIG_YAFFS_CHECKPOINT_RESERVED_BLOCKS=0
+# CONFIG_YAFFS_DISABLE_LAZY_LOAD is not set
+# CONFIG_YAFFS_DISABLE_WIDE_TNODES is not set
+CONFIG_YAFFS_FS=y
+CONFIG_YAFFS_SHORT_NAMES_IN_RAM=y
+CONFIG_YAFFS_YAFFS1=y
+CONFIG_YAFFS_YAFFS2=y
 CONFIG_ZONE_DMA_FLAG=0