diff --git a/sysmocom/suites/gprs/ping_idle_ping.py b/sysmocom/suites/gprs/ping_idle_ping.py
index 88ecbdb..099650c 100755
--- a/sysmocom/suites/gprs/ping_idle_ping.py
+++ b/sysmocom/suites/gprs/ping_idle_ping.py
@@ -45,7 +45,7 @@
 ms.log_info()
 
 print('waiting for modems to attach...')
-wait(ms.is_connected, msc.mcc_mnc())
+wait(ms.is_registered, msc.mcc_mnc())
 wait(msc.subscriber_attached, ms)
 
 print('waiting for modems to attach to data services...')