diff --git a/build/pdp10-ka/run b/build/pdp10-ka/run
index f752ba16..6f108f01 100644
--- a/build/pdp10-ka/run
+++ b/build/pdp10-ka/run
@@ -29,6 +29,7 @@ set mty enabled
 at mty 10003 speed=50000
 at mty line=9,10018 speed=9600
 at mty line=8,10017 speed=9600
+at mty line=7,10016;notelnet speed=50000
 set ten11 enabled
 at ten11 10011
 set auxcpu enabled
diff --git a/src/system/ttytyp.321 b/src/system/ttytyp.321
index 5e549cc3..6fc638f4 100644
--- a/src/system/ttytyp.321
+++ b/src/system/ttytyp.321
@@ -190,7 +190,7 @@ MCONDX KA,{				;;; KA
 	TTDAAA 45,SPEED=50000		;T45 Morton port 5
 	TTDAAA 46,SPEED=50000		;T46 Morton port 6
 	TTDAAA 47,SPEED=50000		;T47 Morton port 7
-	TTDAAA 50,SPEED=50000		;T50 Morton port 8
+	TTDOIM 50,SPEED=50000		;T50 Imlac, port 8
 	TTDTEK 51,SPEED=9600		;T51 Tektronix, port 9
 	TTDVT 52,SPEED=9600		;T52 VT52, port 10
 .ENDC ;}