diff -r fcfc3dbe85fa -r 119129969d37 thermferm/rdconfig.c
--- a/thermferm/rdconfig.c	Fri Aug 03 16:13:17 2018 +0200
+++ b/thermferm/rdconfig.c	Fri Aug 03 16:56:55 2018 +0200
@@ -1204,7 +1204,7 @@
 	    key = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
 	    if (sscanf((const char *)key, "%f", &val) == 1)
 		unit->volume = val;
-		xmlFree(key);
+	    xmlFree(key);
 	}
 	if ((!xmlStrcmp(cur->name, (const xmlChar *)"AIR_ADDRESS"))) {
 	    unit->air_address = (char *)xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);