diff --git a/build/pdp10-ka/config.202 b/build/pdp10-ka/config.202
index 93a40899..2fc5a7a2 100644
--- a/build/pdp10-ka/config.202
+++ b/build/pdp10-ka/config.202
@@ -436,7 +436,7 @@ DEFSYM PMCSHM==0	;NO CACHE BIT
 DEFSYM PMUNSD==160000	;UNUSED BITS
 
 DEFINE ITSIRP BODY
-IRPS ITS,,[DB]
+IRPS ITS,,[HX BC]
 BODY
 TERMIN
 TERMIN
@@ -512,7 +512,7 @@ DEFSYM PMCSHM==0	;NO CACHE BIT
 DEFSYM PMUNSD==160000	;UNUSED BITS
 
 DEFINE ITSIRP BODY
-IRPS ITS,,[DB]
+IRPS ITS,,[BC HX]
 BODY
 TERMIN
 TERMIN