diff --git a/src/xmpp/iq.c b/src/xmpp/iq.c
index 8152ec01..2bcf9bba 100644
--- a/src/xmpp/iq.c
+++ b/src/xmpp/iq.c
@@ -2512,8 +2512,9 @@ iq_mam_request(ProfChatWin *win)
     xmpp_ctx_t * const ctx = connection_get_ctx();
     char *id = connection_create_stanza_id();
 
-    GDateTime *timestamp = g_date_time_new_now_local();
-    timestamp = g_date_time_add_days(timestamp, -1);
+    GDateTime *now = g_date_time_new_now_local();
+    GDateTime *timestamp = g_date_time_add_days(now, -1);
+    g_date_time_unref(now);
     gchar *datestr = g_date_time_format(timestamp,"%FT%T%:::z");
     xmpp_stanza_t *iq = stanza_create_mam_iq(ctx, win->barejid, datestr);
     g_free(datestr);