diff --git a/lib/CodeGen/Mangle.cpp b/lib/CodeGen/Mangle.cpp
index 0a7124d..1d2f2e6 100644
--- a/lib/CodeGen/Mangle.cpp
+++ b/lib/CodeGen/Mangle.cpp
@@ -1061,8 +1061,8 @@
     break;
   }
   
-  case Expr::UnresolvedDeclRefExprClass: {
-    const UnresolvedDeclRefExpr *DRE = cast<UnresolvedDeclRefExpr>(E);
+  case Expr::DependentScopeDeclRefExprClass: {
+    const DependentScopeDeclRefExpr *DRE = cast<DependentScopeDeclRefExpr>(E);
     const Type *QTy = DRE->getQualifier()->getAsType();
     assert(QTy && "Qualifier was not type!");