diff --git a/src/freedombone-image-makefile b/src/freedombone-image-makefile
index 1ee9a2a5..0d761027 100755
--- a/src/freedombone-image-makefile
+++ b/src/freedombone-image-makefile
@@ -43,7 +43,7 @@ IMAGE = $(NAME).img
 ARCHIVE = $(IMAGE).xz
 SIGNATURE = $(ARCHIVE).sig
 OWNER = 1000
-XZ = xz --no-warn --best --verbose
+XZ = xz --no-warn --best --verbose --keep
 SIGN = -gpg --output $(SIGNATURE) --detach-sig $(ARCHIVE)
 
 # settings for `make test`