diff --git a/clang/include/clang/Sema/Sema.h b/clang/include/clang/Sema/Sema.h
index 84d30561fecde..25246374a3c36 100644
--- a/clang/include/clang/Sema/Sema.h
+++ b/clang/include/clang/Sema/Sema.h
@@ -14015,7 +14015,7 @@ class Sema final : public SemaBase {
                               Decl *D)
         : TmplAttr(A), Scope(S), NewDecl(D) {}
   };
-  typedef SmallVector<LateInstantiatedAttribute, 16> LateInstantiatedAttrVec;
+  typedef SmallVector<LateInstantiatedAttribute, 1> LateInstantiatedAttrVec;
 
   void InstantiateAttrs(const MultiLevelTemplateArgumentList &TemplateArgs,
                         const Decl *Pattern, Decl *Inst,