diff --git a/privval/signer_listener_endpoint.go b/privval/signer_listener_endpoint.go
index 0d411c185..004ea1686 100644
--- a/privval/signer_listener_endpoint.go
+++ b/privval/signer_listener_endpoint.go
@@ -74,7 +74,7 @@ func (sl *SignerListenerEndpoint) OnStop() {
 	}
 
 	// Stop service loop
-	sl.stopCh <- struct{}{}
+	close(sl.stopCh)
 	<-sl.stoppedCh
 }