diff --git a/func/rebuild.sh b/func/rebuild.sh
index f69efd48f..f4eee16c5 100644
--- a/func/rebuild.sh
+++ b/func/rebuild.sh
@@ -455,7 +455,7 @@ rebuild_mail_domain_conf() {
         U_MAIL_DKMI=$((U_MAIL_DKMI + 1))
         pem="$USER_DATA/mail/$domain.pem"
         pub="$USER_DATA/mail/$domain.pub"
-        openssl genrsa -out $pem 512 &>/dev/null
+        openssl genrsa -out $pem 1024 &>/dev/null
         openssl rsa -pubout -in $pem -out $pub &>/dev/null
         cp $pem $HOMEDIR/$user/conf/mail/$domain/dkim.pem
 
diff --git a/install/vst-install-ubuntu.sh b/install/vst-install-ubuntu.sh
index 3e8939f58..dac4ec1a3 100644
--- a/install/vst-install-ubuntu.sh
+++ b/install/vst-install-ubuntu.sh
@@ -618,6 +618,7 @@ wget $CHOST/$VERSION/apache2-pma.conf -O /etc/phpmyadmin/apache.conf
 wget $CHOST/$VERSION/pma.conf -O /etc/phpmyadmin/config.inc.php
 ln -s /etc/phpmyadmin/apache.conf /etc/apache2/conf.d/phpmyadmin.conf
 mv -f /etc/phpmyadmin/config-db.php /etc/phpmyadmin/config-db.php_
+chmod 777 /var/lib/phpmyadmin/tmp
 
 # Roundcube configuration
 wget $CHOST/$VERSION/apache2-webmail.conf -O /etc/roundcube/apache.conf