diff --git a/start.sh b/start.sh
index 1fcc224..420f0bc 100755
--- a/start.sh
+++ b/start.sh
@@ -11,7 +11,7 @@ setup_oidc_source() {
     echo "==> Setup OIDC source"
 
     now=$(date +%s)
-    mysql -u"${CLOUDRON_MYSQL_USERNAME}" -p"${CLOUDRON_MYSQL_PASSWORD}" -h"${CLOUDRON_MYSQL_HOST}" --database="${CLOUDRON_MYSQL_DATABASE}" -e \
+    mysql -u"${CLOUDRON_MYSQL_USERNAME}" -p"${CLOUDRON_MYSQL_PASSWORD}" -h"${CLOUDRON_MYSQL_HOST}" -P"${CLOUDRON_MYSQL_PORT}" --database="${CLOUDRON_MYSQL_DATABASE}" -e \
         "REPLACE INTO login_source (id, type, name, is_active, cfg, created_unix, updated_unix) VALUES (1,6,'cloudron', 1,'{\"Provider\":\"openidConnect\",\"ClientID\":\"${CLOUDRON_OIDC_CLIENT_ID}\",\"ClientSecret\":\"${CLOUDRON_OIDC_CLIENT_SECRET}\",\"OpenIDConnectAutoDiscoveryURL\":\"${CLOUDRON_OIDC_ISSUER}/.well-known/openid-configuration\",\"CustomURLMapping\":null,\"IconURL\":\"\",\"Scopes\":[\"openid email profile\"],\"RequiredClaimName\":\"\",\"RequiredClaimValue\":\"\",\"GroupClaimName\":\"\",\"AdminGroup\":\"\",\"GroupTeamMap\":\"\",\"GroupTeamMapRemoval\":false,\"RestrictedGroup\":\"\"}','${now}','${now}')"
 }
 
@@ -41,7 +41,7 @@ setup_auth() {
         setup_oidc_source
     fi
 
-    user_count=$(mysql -u"${CLOUDRON_MYSQL_USERNAME}" -p"${CLOUDRON_MYSQL_PASSWORD}" -h"${CLOUDRON_MYSQL_HOST}" --database="${CLOUDRON_MYSQL_DATABASE}" -N -B -e "SELECT count(*) FROM user")
+    user_count=$(mysql -u"${CLOUDRON_MYSQL_USERNAME}" -p"${CLOUDRON_MYSQL_PASSWORD}" -h"${CLOUDRON_MYSQL_HOST}" -P"${CLOUDRON_MYSQL_PORT}" --database="${CLOUDRON_MYSQL_DATABASE}" -N -B -e "SELECT count(*) FROM user")
     # be careful, not to create root user for existing LDAP based installs
     if [[ "${user_count}" == "0" ]]; then
         echo "==> Setting up root user for first run"