diff --git a/bsc/osmo-bsc.cfg b/bsc/osmo-bsc.cfg
index 7b0fa2a..b64a63d 100644
--- a/bsc/osmo-bsc.cfg
+++ b/bsc/osmo-bsc.cfg
@@ -69,7 +69,7 @@
 network
  network country code 1
  mobile network code 1
- encryption a5 0 1 3 4
+ encryption a5 0 1 3
  neci 1
  paging any use tch 0
  handover 1