diff -r 660001882989 -r 9bd017df749b thermferm/mqtt.c
--- a/thermferm/mqtt.c	Mon Feb 13 16:39:03 2023 +0100
+++ b/thermferm/mqtt.c	Sat Feb 25 10:53:42 2023 +0100
@@ -1554,6 +1554,7 @@
 				    syslog(LOG_NOTICE, "Signal level is invalid");
 				}
 			    }
+			    close(sock);
 			}
 			payload = xstrcat(payload, (char *)"}");
 		    }