diff --git a/src/fbd-dev-led-multicolor.c b/src/fbd-dev-led-multicolor.c
index 287f200..47a55fb 100644
--- a/src/fbd-dev-led-multicolor.c
+++ b/src/fbd-dev-led-multicolor.c
@@ -57,6 +57,13 @@ fbd_dev_led_multicolor_probe (FbdDevLed *led, GError **error)
     return FALSE;
   }
 
+  if (g_strv_length ((GStrv)index) != 3) {
+    g_set_error (error,
+                 G_FILE_ERROR, G_FILE_ERROR_FAILED,
+                 "%s is no multicolor RGB LED", name);
+    return FALSE;
+  }
+
   max_brightness = g_udev_device_get_sysfs_attr_as_int (dev, LED_MAX_BRIGHTNESS_ATTR);
   if (!max_brightness) {
     g_set_error (error,