1 files changed, 6 insertions, 1 deletions

diff --git a/plugins/check_smtp.c b/plugins/check_smtp.c
index fd492294..44b735f9 100644
--- a/plugins/check_smtp.c
+++ b/plugins/check_smtp.c
@@ -517,6 +517,7 @@ check_smtp_config_wrapper process_arguments(int argc, char **argv) {
         int command_size = 0;
         int response_size = 0;
         bool implicit_tls = false;
+        int server_port_option = 0;
         while (true) {
                 int opt_index = getopt_long(argc, argv, "+hVv46Lrt:p:f:e:c:w:H:C:R:sSD:F:A:U:P:q", longopts, &option);
 
@@ -534,7 +535,7 @@ check_smtp_config_wrapper process_arguments(int argc, char **argv) {
                         break;
                 case 'p': /* port */
                         if (is_intpos(optarg)) {
-                                result.config.server_port = atoi(optarg);
+                                server_port_option = atoi(optarg);
                         } else {
                                 usage4(_("Port must be a positive integer"));
                         }
@@ -710,6 +711,10 @@ check_smtp_config_wrapper process_arguments(int argc, char **argv) {
                 }
         }
 
+        if (server_port_option != 0) {
+                result.config.server_port = server_port_option;
+        }
+
         return result;
 }