diff --git a/offchain/authority-claimer/src/listener.rs b/offchain/authority-claimer/src/listener.rs
index 9b506533f..3f50a1cb1 100644
--- a/offchain/authority-claimer/src/listener.rs
+++ b/offchain/authority-claimer/src/listener.rs
@@ -84,19 +84,11 @@ mod tests {
         BrokerConfig, BrokerEndpoint, BrokerError, RedactedUrl, RollupsClaim,
         Url,
     };
-    use snafu::Snafu;
 
     // ------------------------------------------------------------------------------------------------
     // Broker Mock
     // ------------------------------------------------------------------------------------------------
 
-    #[derive(Clone, Debug, Snafu)]
-    pub enum MockError {
-        EndError,
-        InternalError,
-        MockError,
-    }
-
     pub async fn setup_broker(
         docker: &Cli,
         should_fail: bool,