diff --git a/libs/sofia-sip/.update b/libs/sofia-sip/.update
index 7ec8310ce0..8ed3851df3 100644
--- a/libs/sofia-sip/.update
+++ b/libs/sofia-sip/.update
@@ -1 +1 @@
-Tue Dec 16 14:33:26 CST 2008
+Tue Dec 16 14:46:55 CST 2008
diff --git a/libs/sofia-sip/libsofia-sip-ua/nua/nua_session.c b/libs/sofia-sip/libsofia-sip-ua/nua/nua_session.c
index b71a2a5b83..3232a46977 100644
--- a/libs/sofia-sip/libsofia-sip-ua/nua/nua_session.c
+++ b/libs/sofia-sip/libsofia-sip-ua/nua/nua_session.c
@@ -4412,7 +4412,7 @@ session_timer_set(nua_session_usage_t *ss)
        interval is RECOMMENDED. */
     unsigned interval = t->interval;
 
-    interval -= 32 > interval / 6 ? interval / 3 : 32 + interval / 3;
+    interval -= 32 > interval / 3 ? interval / 3 : 32;
 
     nua_dialog_usage_set_refresh_range(du, interval, interval);
     t->timer_set = 1;