diff --git a/build/pdp10-ka/config.202 b/build/pdp10-ka/config.202
index afc73414..cd3976fa 100644
--- a/build/pdp10-ka/config.202
+++ b/build/pdp10-ka/config.202
@@ -261,10 +261,13 @@ DEFOPT NDPTYS==16.	;# TTYS ON DATAPOINT KLUDGE
 DEFOPT NSTTYS==8	;# STY'S (PSEUDO-TTY'S)
 
 DEFOPT TEN11P==1	;Rubin 10-11 interface
-IFDEF TEN11P,IFN TEN11P,DEFSYM T11CPA==3776000	;ADRS OF TEN-11 CONTROL PAGE
-DEFOPT TT11NM==0	; # of 10-11 PDP11 that handles TV TTYs.
-DEFOPT N11TYS==10.	; # PDP11 TV TTYS
-DEFOPT MXVBN==40	; Max video bfr # for assignment purposes.
+IFN TEN11P,[
+ DEFSYM T11CPA==3776000	;ADRS OF TEN-11 CONTROL PAGE
+ DEFOPT TT11NM==0	; # of 10-11 PDP11 that handles TV TTYs.
+ DEFOPT N11TYS==10.	; # PDP11 TV TTYS
+ DEFOPT MXVBN==40	; Max video bfr # for assignment purposes.
+ DEFOPT XGP==1		; Has XGP
+]
 
 DEFOPT PDP6P==1		;HAS PDP6
 DEFSYM PDP6BM==3000000	;BASE ADR OF PDP6 MEM AS SEEN FROM 10