diff --git a/server/drivers/MtxOrb.c b/server/drivers/MtxOrb.c
index 7420b59..d144832 100644
--- a/server/drivers/MtxOrb.c
+++ b/server/drivers/MtxOrb.c
@@ -765,7 +765,7 @@ MtxOrb_backlight (Driver *drvthis, int on)
 		write(p->fd, out, 3);
 	}
 
-	debug(RPT_DEBUG, "MtxOrb: changed brightness to %d", out[2]);
+	debug(RPT_DEBUG, "MtxOrb: changed brightness to %d", promille);
 }