diff --git a/metrology/collectd_exec_xmpp.sh b/metrology/collectd_exec_xmpp.sh
index 4996647..ce3b8d6 100755
--- a/metrology/collectd_exec_xmpp.sh
+++ b/metrology/collectd_exec_xmpp.sh
@@ -143,6 +143,8 @@ _useragents_stats() {
             ua=bitlbee
         elif echo ${line} | grep -qEi "(pidgin|gaim)" ; then
             ua=pidgin
+        elif echo ${line} | grep -qEi "iPhone" ; then
+            ua=siskin-probably
         elif echo ${line} | grep -qEi "^[0-9]{21,26}" ; then
             ua=pidgin-probably
         elif echo ${line} | grep -qEi "macbook" ; then