diff --git a/clang/lib/Interpreter/Interpreter.cpp b/clang/lib/Interpreter/Interpreter.cpp
index b05cb5a0f1dbe..cde354c9cd8d1 100644
--- a/clang/lib/Interpreter/Interpreter.cpp
+++ b/clang/lib/Interpreter/Interpreter.cpp
@@ -581,12 +581,7 @@ Interpreter::Parse(llvm::StringRef Code) {
   if (!TuOrErr)
     return TuOrErr.takeError();
 
-  PTUs.emplace_back(PartialTranslationUnit());
-  PartialTranslationUnit &LastPTU = PTUs.back();
-  LastPTU.TUPart = *TuOrErr;
-
-  if (std::unique_ptr<llvm::Module> M = Act->GenModule())
-    LastPTU.TheModule = std::move(M);
+  PartialTranslationUnit &LastPTU = IncrParser->RegisterPTU(*TuOrErr);
 
   return LastPTU;
 }