diff --git a/src/xmpp/presence.c b/src/xmpp/presence.c
index 4903a104..54c9d68c 100644
--- a/src/xmpp/presence.c
+++ b/src/xmpp/presence.c
@@ -521,6 +521,8 @@ _handle_caps(xmpp_stanza_t *const stanza)
                     char *id = create_unique_id("caps");
 
                     iq_send_caps_request(from, id, node, ver);
+
+                    free(id);
                 }
             }