diff --git a/install_postfixadmin.sh b/install_postfixadmin.sh
index 2f87c20..ca0da11 100755
--- a/install_postfixadmin.sh
+++ b/install_postfixadmin.sh
@@ -221,7 +221,11 @@ DEFAULT_APACHE_SERVER_KEY="server.key"
 DEFAULT_DEBIAN_APACHE_VHOST_DIR="/etc/apache2/sites-available"
 DEFAULT_APACHE_VHOST_DIR="/usr/local/apache2/conf/vhosts"
 DEFAULT_POSTFIX_DB_HOST_PGSQL="/run/postgresql"
-DEFAULT_POSTFIX_DB_HOST_MYSQL="unix:/tmp/mysql.sock"
+if [[ -S "/tmp/mysql.sock" ]] ; then
+   DEFAULT_POSTFIX_DB_HOST_MYSQL="unix:/tmp/mysql.sock"
+else
+   DEFAULT_POSTFIX_DB_HOST_MYSQL="unix:/run/mysqld/mysqld.sock"
+fi
 DEFAULT_POSTFIX_DB_NAME="postfix"
 DEFAULT_POSTFIX_DB_USER="postfix"
 if [[ -f "/usr/local/mysql/sys-maint.cnf" ]] ; then