diff --git a/clang/lib/Serialization/ASTWriterStmt.cpp b/clang/lib/Serialization/ASTWriterStmt.cpp
index 651553244812f..2daf8393b1819 100644
--- a/clang/lib/Serialization/ASTWriterStmt.cpp
+++ b/clang/lib/Serialization/ASTWriterStmt.cpp
@@ -475,7 +475,7 @@ addConstraintSatisfaction(ASTRecordWriter &Record,
   if (!Satisfaction.IsSatisfied) {
     Record.push_back(Satisfaction.NumRecords);
     for (const auto &DetailRecord : Satisfaction) {
-      auto *E = DetailRecord.dyn_cast<Expr *>();
+      auto *E = dyn_cast<Expr *>(DetailRecord);
       Record.push_back(/* IsDiagnostic */ E == nullptr);
       if (E)
         Record.AddStmt(E);