--- a/exceptionrules/exceptionrules-minimal.txt
+++ b/exceptionrules/exceptionrules-minimal.txt
@@ -5816,17 +5816,17 @@ https://capi.connatix.com
 https://cdn.connectad.io
 https://i.connectad.io
 https://e.serverbid.com
 https://sync.serverbid.com
 https://eu2.adnetwork.agency
 https://sync2.adnetwork.agency
 https://web.hb.ad.cpe.dotomi.com
 https://endpoint.copper6.com
-https://сsync.copper6.com
+https://csync.copper6.com
 https://dev.server.cpmstar.com
 https://server.cpmstar.com
 https://staging.server.cpmstar.com
 https://gacraft.jp
 https://docs.prebid.org
 https://ib.adnxs.com
 https://prebid.cwi.re
 https://pbs.dailyhunt.in