diff --git a/example/defaults.conf b/example/defaults.conf
index dc38030..1855883 100644
--- a/example/defaults.conf
+++ b/example/defaults.conf
@@ -15,7 +15,7 @@
     long_name: osmo-gsm-tester-msc
     encryption: a5_0
     codec_list:
-    - hr3
+    - fr1
 
 msc:
   net: