diff --git a/lib/AST/Type.cpp b/lib/AST/Type.cpp
index fd368c4..7a9faac 100644
--- a/lib/AST/Type.cpp
+++ b/lib/AST/Type.cpp
@@ -1006,7 +1006,7 @@
   case NullPtr:           return "nullptr_t";
   case Overload:          return "<overloaded function type>";
   case Dependent:         return "<dependent type>";
-  case UndeducedAuto:     return "<undeduced auto type>";
+  case UndeducedAuto:     return "auto";
   }
 }