diff --git a/br-ext-chip-ambarella/board/s3l/s3l.generic.config b/br-ext-chip-ambarella/board/s3l/s3l.generic.config
index 542b106c3..914258e08 100644
--- a/br-ext-chip-ambarella/board/s3l/s3l.generic.config
+++ b/br-ext-chip-ambarella/board/s3l/s3l.generic.config
@@ -2092,6 +2092,7 @@ CONFIG_INOTIFY_USER=y
 # CONFIG_QUOTACTL is not set
 # CONFIG_AUTOFS4_FS is not set
 # CONFIG_FUSE_FS is not set
+CONFIG_OVERLAYFS_FS=y
 CONFIG_GENERIC_ACL=y
 
 #