diff --git a/ShellPkg/Application/Shell/ConsoleLogger.c b/ShellPkg/Application/Shell/ConsoleLogger.c
index 6f7ed95a61..fa7c07c754 100644
--- a/ShellPkg/Application/Shell/ConsoleLogger.c
+++ b/ShellPkg/Application/Shell/ConsoleLogger.c
@@ -2,7 +2,7 @@
Provides interface to shell console logger.
Copyright (c) 2013 Hewlett-Packard Development Company, L.P.
- Copyright (c) 2009 - 2013, Intel Corporation. All rights reserved.
+ Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -842,7 +842,9 @@ ConsoleLoggerOutputString (
Status = gBS->WaitForEvent (1, &TxtInEx->WaitForKeyEx, &EventIndex);
ASSERT_EFI_ERROR (Status);
Status = TxtInEx->ReadKeyStrokeEx (TxtInEx, &KeyData);
- ASSERT_EFI_ERROR (Status);
+ if (EFI_ERROR(Status)) {
+ break;
+ }
if ((KeyData.Key.UnicodeChar == L's') && (KeyData.Key.ScanCode == SCAN_NULL) &&
((KeyData.KeyState.KeyShiftState == (EFI_SHIFT_STATE_VALID | EFI_LEFT_CONTROL_PRESSED)) ||