diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -497,8 +497,6 @@ running once the system is up.
 			Format: <port#>,<pad1>,<pad2>,<pad3>,<pad4>,<pad5>
 			See also Documentation/input/joystick-parport.txt
 
-	gamma=		[HW,DRM]
-
 	gdth=		[HW,SCSI]
 			See header of drivers/scsi/gdth.c.