diff --git a/include/image-commands.mk b/include/image-commands.mk
index e1951672e6..0c13f30fef 100644
--- a/include/image-commands.mk
+++ b/include/image-commands.mk
@@ -103,6 +103,16 @@ define Build/append-rootfs
 	dd if=$(IMAGE_ROOTFS) >> $@
 endef
 
+define Build/append-squashfs-fakeroot-be
+	rm -rf $@.fakefs $@.fakesquashfs
+	mkdir $@.fakefs
+	$(STAGING_DIR_HOST)/bin/mksquashfs3-lzma \
+		$@.fakefs $@.fakesquashfs \
+		-noappend -root-owned -be -nopad -b 65536 \
+		$(if $(SOURCE_DATE_EPOCH),-fixed-time $(SOURCE_DATE_EPOCH))
+	cat $@.fakesquashfs >> $@
+endef
+
 define Build/append-squashfs4-fakeroot
 	rm -rf $@.fakefs $@.fakesquashfs
 	mkdir $@.fakefs
diff --git a/target/linux/ath79/image/Makefile b/target/linux/ath79/image/Makefile
index 02fd26bfd8..8328be7667 100644
--- a/target/linux/ath79/image/Makefile
+++ b/target/linux/ath79/image/Makefile
@@ -60,9 +60,6 @@ define Build/relocate-kernel
 	rm -rf $@.relocate
 endef
 
-define Build/append-squashfs-fakeroot-be
-	cat ./empty-squashfs-lzma >> $@
-endef
 
 define Device/Default
   DEVICE_DTS_DIR := ../dts
diff --git a/target/linux/ath79/image/empty-squashfs-lzma b/target/linux/ath79/image/empty-squashfs-lzma
deleted file mode 100755
index 803a7661a7..0000000000
Binary files a/target/linux/ath79/image/empty-squashfs-lzma and /dev/null differ