diff --git a/classes/rockchip-gpt-img.bbclass b/classes/rockchip-gpt-img.bbclass
index 434c100..b698db0 100644
--- a/classes/rockchip-gpt-img.bbclass
+++ b/classes/rockchip-gpt-img.bbclass
@@ -9,7 +9,7 @@ IMG_ROOTFS_TYPE = "ext4"
 IMG_ROOTFS = "${IMGDEPLOYDIR}/${IMAGE_LINK_NAME}.${IMG_ROOTFS_TYPE}"
 
 # This image depends on the rootfs image
-IMAGE_TYPEDEP_rockchip-gpt-img = "${IMG_ROOTFS_TYPE}"
+IMAGE_TYPEDEP:rockchip-gpt-img = "${IMG_ROOTFS_TYPE}"
 
 GPTIMG         = "${IMAGE_NAME}-gpt.img"
 GPTIMG_SYMLK   = "${IMAGE_BASENAME}-${MACHINE}-gpt.img"