diff --git a/sysmocom/defaults.conf b/sysmocom/defaults.conf
index dd97456..2f2e317 100644
--- a/sysmocom/defaults.conf
+++ b/sysmocom/defaults.conf
@@ -112,6 +112,7 @@
   mnc: 70
   transmission_mode: 1
   num_cells: 1
+  inactivity_timer: 20000
   enable_measurements: false
   enable_dl_awgn: false
   dl_awgn_snr: 30