diff --git a/clang/lib/Frontend/FrontendAction.cpp b/clang/lib/Frontend/FrontendAction.cpp
index c6f958a6077bf6..f14557c316ec7a 100644
--- a/clang/lib/Frontend/FrontendAction.cpp
+++ b/clang/lib/Frontend/FrontendAction.cpp
@@ -61,6 +61,11 @@ class DelegatingDeserializationListener : public ASTDeserializationListener {
       delete Previous;
   }
 
+  DelegatingDeserializationListener(const DelegatingDeserializationListener &) =
+      delete;
+  DelegatingDeserializationListener &
+  operator=(const DelegatingDeserializationListener &) = delete;
+
   void ReaderInitialized(ASTReader *Reader) override {
     if (Previous)
       Previous->ReaderInitialized(Reader);