diff --git a/src/cfgparse-listen.c b/src/cfgparse-listen.c
index bbdf69934..cdfca5b3a 100644
--- a/src/cfgparse-listen.c
+++ b/src/cfgparse-listen.c
@@ -479,6 +479,7 @@ int cfg_parse_listen(const char *file, int linenum, char **args, int kwm)
 			goto out;
 		}
 
+		free(defproxy.conf.file);
 		free(defproxy.check_command);
 		free(defproxy.check_path);
 		free(defproxy.cookie_name);