diff --git a/setup/owncloud.sh b/setup/owncloud.sh
index 7b63034a..1c7aa451 100755
--- a/setup/owncloud.sh
+++ b/setup/owncloud.sh
@@ -69,7 +69,7 @@ EOF
 	# Create an auto-configuration file to fill in database settings
 	# when the install script is run. Make an administrator account
 	# here or else the install can't finish.
-	adminpassword=$(dd if=/dev/random bs=40 count=1 2>/dev/null | sha1sum | fold -w 30 | head -n 1)
+	adminpassword=$(dd if=/dev/random bs=1 count=40 2>/dev/null | sha1sum | fold -w 30 | head -n 1)
 	cat - > /usr/local/lib/owncloud/config/autoconfig.php <<EOF;
 <?php
 \$AUTOCONFIG = array (