diff --git a/lib/VMCore/Function.cpp b/lib/VMCore/Function.cpp
index fb940bf804a..d7e8bea9ddc 100644
--- a/lib/VMCore/Function.cpp
+++ b/lib/VMCore/Function.cpp
@@ -42,7 +42,7 @@ template SymbolTableListTraits<BasicBlock, Function, Function>;
 // Argument Implementation
 //===----------------------------------------------------------------------===//
 
-Argument::Argument(const Type *Ty, const std::string &Name = "", Function *Par) 
+Argument::Argument(const Type *Ty, const std::string &Name, Function *Par) 
   : Value(Ty, Value::ArgumentVal, Name) {
   Parent = 0;