diff --git a/gdigi.c b/gdigi.c
index e9bfc0c..772aad0 100644
--- a/gdigi.c
+++ b/gdigi.c
@@ -653,9 +653,15 @@ int main(int argc, char *argv[]) {
             }
 
             if (device != NULL) {
+                /* enable GUI mode */
+                set_option(GUI_MODE_ON_OFF, USB_POSITION, 1);
+
                 gui_create(device);
                 gtk_main();
                 gui_free();
+
+                /* disable GUI mode */
+                set_option(GUI_MODE_ON_OFF, USB_POSITION, 0);
             }
         }
     }
diff --git a/gdigi.h b/gdigi.h
index 57d3baf..2a3ee5c 100644
--- a/gdigi.h
+++ b/gdigi.h
@@ -610,6 +610,8 @@ enum {
 #define USB_AUDIO_PLAYBACK_MIX 12297
 #define USB_AUDIO_LEVEL 12307
 
+#define GUI_MODE_ON_OFF 12298
+
 #endif /* DOXYGEN_SHOULD_SKIP_THIS */
 
 typedef enum {