diff --git a/conf/machine/include/rockchip-wic.inc b/conf/machine/include/rockchip-wic.inc
index dab61d83ed2c..eb895cd0b4ad 100644
--- a/conf/machine/include/rockchip-wic.inc
+++ b/conf/machine/include/rockchip-wic.inc
@@ -5,7 +5,8 @@ require conf/machine/include/rockchip-rk-u-boot-env.inc
 
 SPL_BINARY ?= "idbloader.img"
 
-IMAGE_FSTYPES += "wic wic.bmap"
+WIC_FSTYPE ?= "wic"
+IMAGE_FSTYPES += "${WIC_FSTYPE} wic.bmap"
 WKS_FILE ?= "rockchip.wks"
 WKS_FILE_DEPENDS ?= " \
 	e2fsprogs-native \