diff --git a/command/server.go b/command/server.go
index b6877284a2..d3e81ca305 100644
--- a/command/server.go
+++ b/command/server.go
@@ -84,6 +84,7 @@ func (c *ServerCommand) Run(args []string) int {
 	// start logging too early.
 	logGate := &gatedwriter.Writer{Writer: colorable.NewColorable(os.Stderr)}
 	var level int
+	logLevel = strings.ToLower(logLevel)
 	switch logLevel {
 	case "trace":
 		level = log.LevelTrace