diff --git a/cli/flags/common.go b/cli/flags/common.go
index f40808ca03..690e8da4b8 100644
--- a/cli/flags/common.go
+++ b/cli/flags/common.go
@@ -53,7 +53,7 @@ func (commonOpts *CommonOptions) InstallFlags(flags *pflag.FlagSet) {
 	}
 
 	flags.BoolVarP(&commonOpts.Debug, "debug", "D", false, "Enable debug mode")
-	flags.StringVarP(&commonOpts.LogLevel, "log-level", "l", "info", "Set the logging level (debug, info, warn, error, fatal)")
+	flags.StringVarP(&commonOpts.LogLevel, "log-level", "l", "info", "Set the logging level (\"debug\", \"info\", \"warn\", \"error\", \"fatal\")")
 	flags.BoolVar(&commonOpts.TLS, "tls", false, "Use TLS; implied by --tlsverify")
 	flags.BoolVar(&commonOpts.TLSVerify, FlagTLSVerify, dockerTLSVerify, "Use TLS and verify the remote")
 
diff --git a/contrib/completion/fish/docker.fish b/contrib/completion/fish/docker.fish
index 80741042dc..9e47696fb5 100644
--- a/contrib/completion/fish/docker.fish
+++ b/contrib/completion/fish/docker.fish
@@ -65,7 +65,7 @@ complete -c docker -f -n '__fish_docker_no_subcommand' -l ip-forward -d 'Enable
 complete -c docker -f -n '__fish_docker_no_subcommand' -l ip-masq -d "Enable IP masquerading for bridge's IP range"
 complete -c docker -f -n '__fish_docker_no_subcommand' -l iptables -d "Enable Docker's addition of iptables rules"
 complete -c docker -f -n '__fish_docker_no_subcommand' -l ipv6 -d 'Enable IPv6 networking'
-complete -c docker -f -n '__fish_docker_no_subcommand' -s l -l log-level -d 'Set the logging level (debug, info, warn, error, fatal)'
+complete -c docker -f -n '__fish_docker_no_subcommand' -s l -l log-level -d 'Set the logging level ("debug", "info", "warn", "error", "fatal")'
 complete -c docker -f -n '__fish_docker_no_subcommand' -l label -d 'Set key=value labels to the daemon (displayed in `docker info`)'
 complete -c docker -f -n '__fish_docker_no_subcommand' -l mtu -d 'Set the containers network MTU'
 complete -c docker -f -n '__fish_docker_no_subcommand' -s p -l pidfile -d 'Path to use for daemon PID file'
diff --git a/docs/reference/commandline/cli.md b/docs/reference/commandline/cli.md
index 8cb6139f3a..9ca919892c 100644
--- a/docs/reference/commandline/cli.md
+++ b/docs/reference/commandline/cli.md
@@ -31,7 +31,7 @@ Options:
   -D, --debug              Enable debug mode
       --help               Print usage
   -H, --host value         Daemon socket(s) to connect to (default [])
-  -l, --log-level string   Set the logging level (debug, info, warn, error, fatal) (default "info")
+  -l, --log-level string   Set the logging level ("debug", "info", "warn", "error", "fatal") (default "info")
       --tls                Use TLS; implied by --tlsverify
       --tlscacert string   Trust certs signed only by this CA (default "/root/.docker/ca.pem")
       --tlscert string     Path to TLS certificate file (default "/root/.docker/cert.pem")
diff --git a/docs/reference/commandline/dockerd.md b/docs/reference/commandline/dockerd.md
index 8522a0624c..31cff29f17 100644
--- a/docs/reference/commandline/dockerd.md
+++ b/docs/reference/commandline/dockerd.md
@@ -64,7 +64,7 @@ Options:
       --label value                           Set key=value labels to the daemon (default [])
       --live-restore                          Enable live restore of docker when containers are still running
       --log-driver string                     Default driver for container logs (default "json-file")
-  -l, --log-level string                      Set the logging level (debug, info, warn, error, fatal) (default "info")
+  -l, --log-level string                      Set the logging level ("debug", "info", "warn", "error", "fatal") (default "info")
       --log-opt value                         Default log driver options for containers (default map[])
       --max-concurrent-downloads int          Set the max concurrent downloads for each pull (default 3)
       --max-concurrent-uploads int            Set the max concurrent uploads for each push (default 5)