diff --git a/src/i830_lvds.c b/src/i830_lvds.c
index 70565040..7eac3c2c 100644
--- a/src/i830_lvds.c
+++ b/src/i830_lvds.c
@@ -84,6 +84,7 @@ static char *backlight_interfaces[] = {
     "acpi_video1",
     "acpi_video0",
     "fujitsu-laptop",
+    "sony",
     NULL,
 };