diff --git a/lib/CodeGen/MachineBasicBlock.cpp b/lib/CodeGen/MachineBasicBlock.cpp
index 92dc79b..1b78d7a 100644
--- a/lib/CodeGen/MachineBasicBlock.cpp
+++ b/lib/CodeGen/MachineBasicBlock.cpp
@@ -1,8 +1,8 @@
-//===-- llvm/CodeGen/MachineCodeForBasicBlock.cpp ---------------*- C++ -*--=//
+//===-- MachineCodeForBasicBlock.cpp --------------------------------------===//
 // 
-// Purpose:
-//   Collect the sequence of machine instructions for a basic block.
-//===---------------------------------------------------------------------===//
+// Collect the sequence of machine instructions for a basic block.
+//
+//===----------------------------------------------------------------------===//
 
 #include "llvm/CodeGen/MachineCodeForBasicBlock.h"
 
@@ -21,8 +21,3 @@
   }
 } RegisterCreateMCFBB;
 
-
-MachineBasicBlock::MachineBasicBlock()
-  : Annotation(MCFBB_AID)
-{}
-