diff --git a/target/linux/ramips/image/mt7621.mk b/target/linux/ramips/image/mt7621.mk
index f3c7d7e8b4..d369d528b4 100644
--- a/target/linux/ramips/image/mt7621.mk
+++ b/target/linux/ramips/image/mt7621.mk
@@ -1097,6 +1097,7 @@ endef
 TARGET_DEVICES += zbtlink_zbt-wg2626
 
 define Device/zbtlink_zbt-wg3526-16m
+  $(Device/uimage-lzma-loader)
   IMAGE_SIZE := 16064k
   DEVICE_VENDOR := Zbtlink
   DEVICE_MODEL := ZBT-WG3526
@@ -1108,6 +1109,7 @@ endef
 TARGET_DEVICES += zbtlink_zbt-wg3526-16m
 
 define Device/zbtlink_zbt-wg3526-32m
+  $(Device/uimage-lzma-loader)
   IMAGE_SIZE := 32448k
   DEVICE_VENDOR := Zbtlink
   DEVICE_MODEL := ZBT-WG3526