diff --git a/dist/etc/network/core-t/chain-0.cfg b/dist/etc/network/core-t/chain-0.cfg
index 69e86500a021d9b747952dcc107880816c035110..63c3f8393b531ba517a1d34cab941fe67ebeef80 100644
--- a/dist/etc/network/core-t/chain-0.cfg
+++ b/dist/etc/network/core-t/chain-0.cfg
@@ -22,7 +22,7 @@ is_static_genesis_event=false
 static_genesis_event=0xEB2152E716245D067BEA80E8CB6D7C35859B2E0E91AF4201486BB443F6AEE7FF
 
 [dag-poa]
-auth_certs_prefix=core-t.
+auth_certs_prefix=core-t
 auth_certs_number=3
 auth_certs_number_verify=1 #4
 auth_certs_dir=/opt/cellframe-node/share/ca