1 files changed, 1 insertions, 1 deletions

diff --git a/examples/mdev.conf.change_blockdev.sh b/examples/mdev.conf.change_blockdev.sh
index 512e43fcc..252d30f53 100755
--- a/examples/mdev.conf.change_blockdev.sh
+++ b/examples/mdev.conf.change_blockdev.sh
@@ -14,7 +14,7 @@ env | sort
 
 while sleep 1; test $cnt != 0; do
         echo "Trying to reread partition table on $DEVNAME ($cnt)"
-        : $((cnt--))
+        cnt=$((cnt-1))
         # If device node doesn't exist, it means the device was removed.
         # Stop trying.
         test -e "$DEVNAME" || { echo "$DEVNAME doesn't exist, aborting"; exit 1; }