diff --git a/cluster.go b/cluster.go
index 217cadd..07de993 100644
--- a/cluster.go
+++ b/cluster.go
@@ -235,6 +235,7 @@ func (c *ClusterClient) slotClosestNode(slot int) (*clusterNode, error) {
 func (c *ClusterClient) cmdSlotAndNode(cmd Cmder) (int, *clusterNode, error) {
 	cmdInfo := c.cmdInfo(cmd.arg(0))
 	if cmdInfo == nil {
+		internal.Logf("info for cmd=%s not found", cmd.arg(0))
 		node, err := c.randomNode()
 		return 0, node, err
 	}
diff --git a/commands.go b/commands.go
index 0d8e8b2..db9d806 100644
--- a/commands.go
+++ b/commands.go
@@ -550,7 +550,7 @@ func (c *cmdable) Set(key string, value interface{}, expiration time.Duration) *
 
 func (c *cmdable) SetBit(key string, offset int64, value int) *IntCmd {
 	cmd := NewIntCmd(
-		"SETBIT",
+		"setbit",
 		key,
 		offset,
 		value,
diff --git a/ring.go b/ring.go
index 8c998a8..b0c0179 100644
--- a/ring.go
+++ b/ring.go
@@ -169,6 +169,7 @@ func (c *Ring) cmdInfo(name string) *CommandInfo {
 func (c *Ring) cmdFirstKey(cmd Cmder) string {
 	cmdInfo := c.cmdInfo(cmd.arg(0))
 	if cmdInfo == nil {
+		internal.Logf("info for cmd=%s not found", cmd.arg(0))
 		return ""
 	}
 	return cmd.arg(int(cmdInfo.FirstKeyPos))