diff --git a/ggsn_tests/osmo-ggsn.cfg b/ggsn_tests/osmo-ggsn.cfg
index 5fdcf15..28284e7 100644
--- a/ggsn_tests/osmo-ggsn.cfg
+++ b/ggsn_tests/osmo-ggsn.cfg
@@ -45,6 +45,9 @@
 ggsn ggsn0
  gtp state-dir /tmp
  gtp bind-ip 127.0.0.2
+ timer gtp T3 1
+ timer gtp T1003 2
+ timer gtp X3 2
  apn internet
   gtpu-mode tun
   tun-device tun4