diff --git a/tests/common b/tests/common
index e02359c7..e690c85a 100644
--- a/tests/common
+++ b/tests/common
@@ -52,7 +52,7 @@ check_all_images()
 	for image in $(find $dir \( -iname '*.img' -o	\
 				-iname '*.img.xz' -o 	\
 				-iname '*.raw' -o 	\
-				-iname '*.raw.xz' \) )
+				-iname '*.raw.xz' \) | sort)
 	do
 		cleanme=
 		case "$image" in