diff --git a/lib/System/Unix/Alarm.inc b/lib/System/Unix/Alarm.inc
index 853fcf50365..7faa6afa9ad 100644
--- a/lib/System/Unix/Alarm.inc
+++ b/lib/System/Unix/Alarm.inc
@@ -1,4 +1,4 @@
-//===-- Alarm.inc - Implement Unix Alarm Support --------------------------===//
+//===-- Alarm.inc - Implement Unix Alarm Support ----------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -20,11 +20,11 @@ using namespace llvm;
 /// user presses CTRL-C.
 static volatile bool AlarmCancelled = false;
 
-/// AlarmTriggered - This flag is set by the SIGALRM signal handler if the 
+/// AlarmTriggered - This flag is set by the SIGALRM signal handler if the
 /// alarm was triggered.
 static volatile bool AlarmTriggered = false;
 
-/// NestedSOI - Sanity check.  Alarms cannot be nested or run in parallel.  
+/// NestedSOI - Sanity check.  Alarms cannot be nested or run in parallel.
 /// This ensures that they never do.
 static bool NestedSOI = false;
 
diff --git a/lib/System/Unix/Host.inc b/lib/System/Unix/Host.inc
index 205ce2362c7..1bd6da5632b 100644
--- a/lib/System/Unix/Host.inc
+++ b/lib/System/Unix/Host.inc
@@ -1,10 +1,10 @@
- //===- llvm/System/Unix/Host.inc --------------------------------*- C++ -*-===//
-// 
+ //===- llvm/System/Unix/Host.inc -------------------------------*- C++ -*-===//
+//
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
-// 
+//
 //===----------------------------------------------------------------------===//
 //
 // This file implements the UNIX Host support.
diff --git a/lib/System/Win32/Alarm.inc b/lib/System/Win32/Alarm.inc
index be23bf62faf..2f1a2808f98 100644
--- a/lib/System/Win32/Alarm.inc
+++ b/lib/System/Win32/Alarm.inc
@@ -1,4 +1,4 @@
-//===-- Alarm.inc - Implement Win32 Alarm Support -------------------------===//
+//===-- Alarm.inc - Implement Win32 Alarm Support ---------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -14,7 +14,7 @@
 #include <cassert>
 using namespace llvm;
 
-/// NestedSOI - Sanity check.  Alarms cannot be nested or run in parallel.  
+/// NestedSOI - Sanity check.  Alarms cannot be nested or run in parallel.
 /// This ensures that they never do.
 static bool NestedSOI = false;