diff --git a/clang/lib/Serialization/ASTWriterDecl.cpp b/clang/lib/Serialization/ASTWriterDecl.cpp
index 24ac8f44179b..6bf5598c9307 100644
--- a/clang/lib/Serialization/ASTWriterDecl.cpp
+++ b/clang/lib/Serialization/ASTWriterDecl.cpp
@@ -1116,13 +1116,13 @@ void ASTWriter::WriteDeclsBlockAbbrevs() {
   Abv->Add(BitCodeAbbrevOp(0));                       // hasExtInfo
   Abv->Add(BitCodeAbbrevOp(serialization::PREDEF_TYPE_NULL_ID)); // InfoType
   // VarDecl
+  Abv->Add(BitCodeAbbrevOp(0));                       // No redeclaration
   Abv->Add(BitCodeAbbrevOp(0));                       // StorageClass
   Abv->Add(BitCodeAbbrevOp(0));                       // StorageClassAsWritten
   Abv->Add(BitCodeAbbrevOp(0));                       // isThreadSpecified
   Abv->Add(BitCodeAbbrevOp(0));                       // hasCXXDirectInitializer
   Abv->Add(BitCodeAbbrevOp(0));                       // isExceptionVariable
   Abv->Add(BitCodeAbbrevOp(0));                       // isNRVOVariable
-  Abv->Add(BitCodeAbbrevOp(0));                       // PrevDecl
   Abv->Add(BitCodeAbbrevOp(0));                       // HasInit
   Abv->Add(BitCodeAbbrevOp(0));                   // HasMemberSpecializationInfo
   // ParmVarDecl