diff --git a/ggsn_tests/GGSN_Tests.cfg b/ggsn_tests/GGSN_Tests.cfg
index e849ed4..b542108 100644
--- a/ggsn_tests/GGSN_Tests.cfg
+++ b/ggsn_tests/GGSN_Tests.cfg
@@ -13,6 +13,10 @@
 [TESTPORT_PARAMETERS]
 
 [MODULE_PARAMETERS]
+# local T3-RESPONSE timeout, seconds:
+GGSN_Tests.mp_t3_response := 1;
+# local N3-REQUESTS counter:
+GGSN_Tests.mp_n3_requests := 2;
 
 [EXECUTE]
 GGSN_Tests.control
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