diff --git a/tests/dl-linux-tarball.bash b/tests/dl-linux-tarball.bash
index 5fbd2b4..9fd8534 100755
--- a/tests/dl-linux-tarball.bash
+++ b/tests/dl-linux-tarball.bash
@@ -1,14 +1,17 @@
 #!/bin/bash -eu
 #
-# This script checks the MD5 sum of /tmp/linux-3.0.tar.gz and downloads
-# a fresh copy if its incorrect or the file is missing.
+# This script checks the size of /tmp/linux-3.0.tar.gz and downloads
+# a fresh copy if the size is incorrect or the file is missing.
 
 TGZ=/tmp/linux-3.0.tar.gz
 
-MD5_ACTUAL="$(md5sum $TGZ | cut -f1 -d' ')"
-MD5_WANT="f7e6591d86a9dbe123dfd1a0be054e7f"
+SIZE_WANT=96675825
+SIZE_ACTUAL=0
+if [[ -e $TGZ ]]; then
+	SIZE_ACTUAL=$(stat -c %s $TGZ)
+fi
 
-if [[ $MD5_ACTUAL != $MD5_WANT ]]; then
+if [[ $SIZE_ACTUAL -ne $SIZE_WANT ]]; then
 	echo "Downloading linux-3.0.tar.gz"
 	wget -nv --show-progress -c -O $TGZ \
 		https://cdn.kernel.org/pub/linux/kernel/v3.0/linux-3.0.tar.gz