diff --git a/include/llvm/Analysis/ConstantFolding.h b/include/llvm/Analysis/ConstantFolding.h
index 12e623ea9be..0018a567967 100644
--- a/include/llvm/Analysis/ConstantFolding.h
+++ b/include/llvm/Analysis/ConstantFolding.h
@@ -1,4 +1,4 @@
-//===-- ConstantFolding.h - Fold instructions into constants --------------===//
+//===-- ConstantFolding.h - Fold instructions into constants ----*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -48,8 +48,8 @@ Constant *ConstantFoldConstantExpression(const ConstantExpr *CE,
 
 /// ConstantFoldInstOperands - Attempt to constant fold an instruction with the
 /// specified operands.  If successful, the constant result is returned, if not,
-/// null is returned.  Note that this function can fail when attempting to 
-/// fold instructions like loads and stores, which have no constant expression 
+/// null is returned.  Note that this function can fail when attempting to
+/// fold instructions like loads and stores, which have no constant expression
 /// form.
 ///
 Constant *ConstantFoldInstOperands(unsigned Opcode, Type *DestTy,
diff --git a/lib/CodeGen/SelectionDAG/LegalizeTypes.h b/lib/CodeGen/SelectionDAG/LegalizeTypes.h
index 1c4274a9108..9128c5e54e1 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeTypes.h
+++ b/lib/CodeGen/SelectionDAG/LegalizeTypes.h
@@ -1,4 +1,4 @@
-//===-- LegalizeTypes.h - Definition of the DAG Type Legalizer class ------===//
+//===-- LegalizeTypes.h - DAG Type Legalizer class definition ---*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
diff --git a/lib/Transforms/InstCombine/InstCombine.h b/lib/Transforms/InstCombine/InstCombine.h
index 2a360747500..b1eefd214d5 100644
--- a/lib/Transforms/InstCombine/InstCombine.h
+++ b/lib/Transforms/InstCombine/InstCombine.h
@@ -1,4 +1,4 @@
-//===- InstCombine.h - Main InstCombine pass definition -------------------===//
+//===- InstCombine.h - Main InstCombine pass definition ---------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //