diff --git a/build/misc.tcl b/build/misc.tcl
index 04d3413d..e29020cc 100644
--- a/build/misc.tcl
+++ b/build/misc.tcl
@@ -1042,6 +1042,10 @@ respond "=YES" "1\r"
 respond "37000" "37000\r"
 expect ":KILL"
 
+# GT40 boot ROM.
+respond "*" ":palx gt40;bootvt\r"
+expect ":KILL"
+
 # KL10 front end debugger.  Put it in the same directory as the
 # "MX" IOELEV.
 respond "*" ":palx sysbin;_syseng; klrug\r"
diff --git a/doc/programs.md b/doc/programs.md
index f0055d96..8f8b9f2d 100644
--- a/doc/programs.md
+++ b/doc/programs.md
@@ -26,6 +26,7 @@
 - BINPRT, display information about a binary executable file.
 - BITPRT, print JCL as bits.
 - BKG, a Backgammon game.
+- BOOTVT, GT40 boot ROM.
 - BYE, say goodbye to user. Used in LOGOUT scripts.
 - CALPRT, decode a .CALL instruction's CALL block.
 - CARPET, PDP-11 remote debugger.
diff --git a/src/gt40/bootvt.s09 b/src/gt40/bootvt.s09
index 4fd4dcf4..8db04794 100644
--- a/src/gt40/bootvt.s09
+++ b/src/gt40/bootvt.s09
@@ -1,4 +1,4 @@
-	.ASECT
+;	.ASECT
 
 ;BOOTVT.S09  5/2/72