diff --git a/lib/Frontend/ChainedIncludesSource.cpp b/lib/Frontend/ChainedIncludesSource.cpp
index a17def0..cde84ca 100644
--- a/lib/Frontend/ChainedIncludesSource.cpp
+++ b/lib/Frontend/ChainedIncludesSource.cpp
@@ -143,6 +143,7 @@
         Clang->getASTConsumer().GetASTDeserializationListener()));
       if (!Reader)
         return 0;
+      Clang->setModuleManager(static_cast<ASTReader*>(Reader.get()));
       Clang->getASTContext().setExternalSource(Reader);
     }