diff --git a/AppleWin/docs/History.txt b/AppleWin/docs/History.txt
index 90967784..deb7d887 100644
--- a/AppleWin/docs/History.txt
+++ b/AppleWin/docs/History.txt
@@ -24,7 +24,7 @@ Changes:
. Support auto-fire for all 3 joystick buttons (via Config->Input)
. Debugger: Added "disk info" command
. Added confirmation message box for reboot (F2)
-. Added -no-printscreen-dlg to surpress the warning if AppleWin failed to capture the PrintScreen key
+. Added -no-printscreen-dlg to suppress the warning if AppleWin failed to capture the PrintScreen key
. Changed save-state file persisted to Registry from filename to pathame
Fixes:
. [Bug #19154] ProDOS Order 2IMG crashing
diff --git a/AppleWin/help/CommandLine.html b/AppleWin/help/CommandLine.html
index 1327c865..23f83946 100644
--- a/AppleWin/help/CommandLine.html
+++ b/AppleWin/help/CommandLine.html
@@ -34,5 +34,7 @@
Enable logging. Creates an AppleWin.log file
-m
Disable DirectSound support
+ -no-printscreen-dlg
+ Suppress the warning message-box if AppleWin fails to capture the PrintScreen key