diff --git a/sysmocom/suites/gprs/lib/testlib.py b/sysmocom/suites/gprs/lib/testlib.py
index 1421229..510dc72 100644
--- a/sysmocom/suites/gprs/lib/testlib.py
+++ b/sysmocom/suites/gprs/lib/testlib.py
@@ -85,7 +85,7 @@
 
     print('waiting for modems to attach...')
     for ms in ms_li:
-        wait(ms.is_connected, msc.mcc_mnc())
+        wait(ms.is_registered, msc.mcc_mnc())
     wait(msc.subscriber_attached, *ms_li)
 
     print('waiting for modems to attach to data services...')