diff --git a/client/lxd_cluster.go b/client/lxd_cluster.go
index 7654a2991234..3179813fd5b2 100644
--- a/client/lxd_cluster.go
+++ b/client/lxd_cluster.go
@@ -6,7 +6,7 @@ import (
 	"github.com/canonical/lxd/shared/api"
 )
 
-// GetCluster returns information about a cluster
+// GetCluster returns information about a cluster.
 func (r *ProtocolLXD) GetCluster() (*api.Cluster, string, error) {
 	err := r.CheckExtension("clustering")
 	if err != nil {