diff --git a/appl/kx/rxtelnet.in b/appl/kx/rxtelnet.in
index 71ef65e99..e15cf26f8 100644
--- a/appl/kx/rxtelnet.in
+++ b/appl/kx/rxtelnet.in
@@ -16,7 +16,7 @@ if test $# -ne 3; then
   exit 1
 fi
 pid=$1
-disp=:$2
+disp=$2
 auth=$3
 term=
 oldifs=$IFS
diff --git a/appl/kx/rxterm.in b/appl/kx/rxterm.in
index 8f8d6fe4b..68e490caa 100644
--- a/appl/kx/rxterm.in
+++ b/appl/kx/rxterm.in
@@ -16,7 +16,7 @@ if test $# -ne 3; then
   exit 1
 fi
 pid=$1
-disp=:$2
+disp=$2
 auth=$3
 kill -USR1 $pid
 rsh -n $host "env DISPLAY=$disp XAUTHORITY=$auth xterm -T $host -n $host $xterm_args &"