diff --git a/src/hms123311.c b/src/hms123311.c
index 3c781c68..a1a35f2b 100644
--- a/src/hms123311.c
+++ b/src/hms123311.c
@@ -318,7 +318,7 @@ HMS_unlist (void)
 	hms = HMS_connect("servers/%s/unlist", hms_server_token);
 
 	if (! hms)
-		return 0;
+		return;
 
 	curl_easy_setopt(hms->curl, CURLOPT_CUSTOMREQUEST, "POST");