diff --git a/lib/CodeGen/CodeGenModule.h b/lib/CodeGen/CodeGenModule.h
index f38c0bc..bb32fff 100644
--- a/lib/CodeGen/CodeGenModule.h
+++ b/lib/CodeGen/CodeGenModule.h
@@ -265,7 +265,7 @@
   /// setTypeVisibility - Set the visibility for the given global
   /// value which holds information about a type.
   void setTypeVisibility(llvm::GlobalValue *GV, const CXXRecordDecl *D,
-                         bool IsForRTTI, bool IsForDefinition) const;
+                         bool IsForRTTI) const;
 
   llvm::Constant *GetAddrOfGlobal(GlobalDecl GD) {
     if (isa<CXXConstructorDecl>(GD.getDecl()))