diff --git a/llvm/lib/Target/Alpha/AlphaTargetMachine.h b/llvm/lib/Target/Alpha/AlphaTargetMachine.h
index 26238fb..cf00e58 100644
--- a/llvm/lib/Target/Alpha/AlphaTargetMachine.h
+++ b/llvm/lib/Target/Alpha/AlphaTargetMachine.h
@@ -37,7 +37,7 @@
 
 public:
   AlphaTargetMachine(const Target &T, const std::string &TT,
-                     const std::string &FS);
+                     const std::string &CPU, const std::string &FS);
 
   virtual const AlphaInstrInfo *getInstrInfo() const { return &InstrInfo; }
   virtual const TargetFrameLowering  *getFrameLowering() const {