diff --git a/logging/logging.go b/logging/logging.go
index 043d981..a9e1e3c 100644
--- a/logging/logging.go
+++ b/logging/logging.go
@@ -25,7 +25,8 @@ import (
 )
 
 var (
-	_ redis.ConnWithTimeout = (*loggingConn)(nil)
+	_            redis.ConnWithTimeout = (*loggingConn)(nil)
+	logCallDepth                       = 3
 )
 
 // NewLoggingConn returns a logging wrapper around a connection.
@@ -55,7 +56,7 @@ func (c *loggingConn) Close() error {
 	err := c.Conn.Close()
 	var buf bytes.Buffer
 	fmt.Fprintf(&buf, "%sClose() -> (%v)", c.prefix, err)
-	c.logger.Output(2, buf.String()) // nolint: errcheck
+	c.logger.Output(logCallDepth, buf.String()) // nolint: errcheck
 	return err
 }
 
@@ -115,7 +116,7 @@ func (c *loggingConn) print(method, commandName string, args []interface{}, repl
 		buf.WriteString(", ")
 	}
 	fmt.Fprintf(&buf, "%v)", err)
-	c.logger.Output(3, buf.String()) // nolint: errcheck
+	c.logger.Output(logCallDepth+1, buf.String()) // nolint: errcheck
 }
 
 func (c *loggingConn) Do(commandName string, args ...interface{}) (interface{}, error) {
diff --git a/sentinel/sentinel.go b/sentinel/sentinel.go
index a4df9c3..37b93e1 100644
--- a/sentinel/sentinel.go
+++ b/sentinel/sentinel.go
@@ -93,6 +93,13 @@ func NewPool(cfg Config) *redis.Pool {
 		*cfg.MaxActive = 100
 	}
 
+	var (
+		logPrefix    = "redis"
+		logStdPrefix = "DBUG "
+		logStdWriter = os.Stdout
+		logStdFlags  = log.Ldate | log.Lmicroseconds | log.Lshortfile
+		logStdLogger = log.New(logStdWriter, logStdPrefix, logStdFlags)
+	)
 	return &redis.Pool{
 		MaxIdle:     *cfg.MaxIdle,
 		MaxActive:   *cfg.MaxActive,
@@ -122,7 +129,7 @@ func NewPool(cfg Config) *redis.Pool {
 			}
 
 			if cfg.Debug {
-				c = logging.NewLoggingConn(c, log.New(os.Stdout, "XXXXXXX", log.LstdFlags), "coreredis")
+				c = logging.NewLoggingConn(c, logStdLogger, logPrefix)
 			}
 			return c, nil
 		},