diff --git a/things/api/auth/grpc/endpoint.go b/things/api/auth/grpc/endpoint.go
index c389ea69..ff081de0 100644
--- a/things/api/auth/grpc/endpoint.go
+++ b/things/api/auth/grpc/endpoint.go
@@ -44,7 +44,7 @@ func isChannelOwnerEndpoint(svc things.Service) endpoint.Endpoint {
 			return nil, err
 		}
 
-		err := svc.IsChannelOwner(ctx, req.chanID, req.owner)
+		err := svc.IsChannelOwner(ctx, req.owner, req.chanID)
 		return emptyRes{err: err}, err
 	}
 }
diff --git a/things/api/metrics.go b/things/api/metrics.go
index 5568595e..69b89a97 100644
--- a/things/api/metrics.go
+++ b/things/api/metrics.go
@@ -190,7 +190,7 @@ func (ms *metricsMiddleware) IsChannelOwner(ctx context.Context, owner, chanID s
 		ms.latency.With("method", "is_channel_owner").Observe(time.Since(begin).Seconds())
 	}(time.Now())
 
-	return ms.svc.CanAccessByID(ctx, owner, chanID)
+	return ms.svc.IsChannelOwner(ctx, owner, chanID)
 }
 
 func (ms *metricsMiddleware) Identify(ctx context.Context, key string) (string, error) {