diff --git a/include/llvm/Target/TargetLowering.h b/include/llvm/Target/TargetLowering.h
index e462938cc59..15a5cb9ad57 100644
--- a/include/llvm/Target/TargetLowering.h
+++ b/include/llvm/Target/TargetLowering.h
@@ -234,10 +234,9 @@ public:
   /// element is the outgoing token chain.
   typedef std::vector<std::pair<SDOperand, const Type*> > ArgListTy;
   virtual std::pair<SDOperand, SDOperand>
-  LowerCallTo(SDOperand Chain, const Type *RetTy, SDOperand Callee,
-              ArgListTy &Args, SelectionDAG &DAG) = 0;
+  LowerCallTo(SDOperand Chain, const Type *RetTy, bool isVarArg,
+              SDOperand Callee, ArgListTy &Args, SelectionDAG &DAG) = 0;
 
-  
   /// LowerVAStart - This lowers the llvm.va_start intrinsic.  If not
   /// implemented, this method prints a message and aborts.
   virtual std::pair<SDOperand, SDOperand>