diff --git a/config.go b/config.go
index fe5bbf89..3ed661e8 100644
--- a/config.go
+++ b/config.go
@@ -107,6 +107,7 @@ type Config struct {
 	DefaultLogLevel      string               `json:"default_log_level"`
 	VideoSleepAfterSec   int                  `json:"video_sleep_after_sec"`
 	VideoQualityFactor   float64              `json:"video_quality_factor"`
+	AudioOutputSource    string               `json:"audio_output_source"` // "hdmi" or "usb"
 }
 
 func (c *Config) GetDisplayRotation() uint16 {