diff --git a/target/linux/mediatek/filogic/config-5.15 b/target/linux/mediatek/filogic/config-5.15
index ae82f8a24..dfd285bfb 100644
--- a/target/linux/mediatek/filogic/config-5.15
+++ b/target/linux/mediatek/filogic/config-5.15
@@ -231,6 +231,7 @@ CONFIG_MTD_SPLIT_FIRMWARE=y
 CONFIG_MTD_SPLIT_FIT_FW=y
 CONFIG_MTD_UBI=y
 CONFIG_MTD_UBI_BEB_LIMIT=20
+CONFIG_MTD_UBI_FASTMAP=y
 CONFIG_MTD_UBI_BLOCK=y
 CONFIG_MTD_UBI_WL_THRESHOLD=4096
 # CONFIG_MTK_CMDQ is not set