diff --git a/src/devices/input/keyboard_at.c b/src/devices/input/keyboard_at.c
index e07794e..eae0b75 100644
--- a/src/devices/input/keyboard_at.c
+++ b/src/devices/input/keyboard_at.c
@@ -11,7 +11,7 @@
  * NOTE:	Several changes to disable Mode1 for now, as this breaks 
  *		 the TSX32 operating system. More cleanups needed..
  *
- * Version:	@(#)keyboard_at.c	1.0.21	2019/04/20
+ * Version:	@(#)keyboard_at.c	1.0.22	2019/04/21
  *
  * Authors:	Fred N. van Kempen, <decwiz@yahoo.com>
  *		Miran Grca, <mgrca8@gmail.com>
@@ -1888,6 +1888,10 @@ do_command:
 				kbd->want60 = 1;
 				break;
 
+			case 0xd4:	/* Dunno, but OS/2 2.00LA sends it */
+				kbd->want60 = 1;
+				break;
+
 			case 0xdd:	/* Disable A20 Address Line */
 				DEBUG("ATkbd: disable A20\n");
 				kbd_output_write(kbd, kbd->output_port & 0xfd);