diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
index 0fea57b2e1799..98d59b79ab881 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -2368,9 +2368,8 @@ static QualType GeneralizeTransparentUnion(QualType Ty) {
   const RecordDecl *UD = UT->getDecl()->getDefinitionOrSelf();
   if (!UD->hasAttr<TransparentUnionAttr>())
     return Ty;
-  for (const auto *it : UD->fields()) {
-    return it->getType();
-  }
+  if (!UD->fields().empty())
+    return UD->fields().begin()->getType();
   return Ty;
 }