--- plugins/check_smtp.c	2021-10-29 20:30:39.000000000 +0100
+++ plugins/check_smtp.c	2022-04-10 17:33:41.525979000 +0100
@@ -648,6 +648,7 @@
 #else
 			usage (_("SSL support not available - install OpenSSL and recompile"));
 #endif
+			break;
 		case 's':
 		/* ssl */
 			use_ssl = TRUE;