diff --git a/lib/Sema/Sema.cpp b/lib/Sema/Sema.cpp
index 1212d07..e3cea5b 100644
--- a/lib/Sema/Sema.cpp
+++ b/lib/Sema/Sema.cpp
@@ -60,7 +60,7 @@
         // Not va_list.
         Ty.getUnqualifiedType() != Context.getBuiltinVaListType()) {
       S = "'"+S+"' (aka '";
-      S += DesugaredTy.getAsString();
+      S += DesugaredTy.getAsString(Context.PrintingPolicy);
       S += "')";
       Output.append(S.begin(), S.end());
       return;