diff --git a/main.go b/main.go
index 947548a5..c1c0d143 100644
--- a/main.go
+++ b/main.go
@@ -124,7 +124,7 @@ func isLocalhost(s string) bool {
 // loadConfigs loads configuration from a file or stdin (piped).
 // The configurations are grouped by bind address.
 // Configuration is obtained from one of three sources, tried
-// in this order: 1. -conf flag, 2. stdin, 3. Caddyfile.
+// in this order: 1. -conf flag, 2. stdin, 3. command line argument 4. Caddyfile.
 // If none of those are available, a default configuration is
 // loaded.
 func loadConfigs() (config.Group, error) {
@@ -155,6 +155,12 @@ func loadConfigs() (config.Group, error) {
 		}
 	}
 
+	// Command line Arg
+	if flag.NArg() > 0 {
+		confBody := ":" + config.DefaultPort + "\n" + strings.Join(flag.Args(), "\n")
+		return config.Load("args", bytes.NewBufferString(confBody))
+	}
+
 	// Caddyfile
 	file, err := os.Open(config.DefaultConfigFile)
 	if err != nil {