diff --git a/test/test-functions b/test/test-functions
index 95d37d09d5..ba18a0ea2d 100644
--- a/test/test-functions
+++ b/test/test-functions
@@ -1238,7 +1238,7 @@ create_empty_image() {
     LOOPDEV=$(losetup --show -P -f "$IMAGE_PUBLIC")
     [ -b "$LOOPDEV" ] || return 1
     sfdisk "$LOOPDEV" <<EOF
-,$((size - 50))M
+,$((size - 50))M,L,*
 ,
 EOF