diff --git a/clang/lib/AST/ExprConstant.cpp b/clang/lib/AST/ExprConstant.cpp
index eea0827d6f7a8..320e2ef12c38d 100644
--- a/clang/lib/AST/ExprConstant.cpp
+++ b/clang/lib/AST/ExprConstant.cpp
@@ -6867,8 +6867,8 @@ static std::optional<DynAlloc *> CheckDeleteKind(EvalInfo &Info, const Expr *E,
     return std::nullopt;
   }
 
-  QualType AllocType = Pointer.Base.getDynamicAllocType();
   if (DeallocKind != (*Alloc)->getKind()) {
+    QualType AllocType = Pointer.Base.getDynamicAllocType();
     Info.FFDiag(E, diag::note_constexpr_new_delete_mismatch)
         << DeallocKind << (*Alloc)->getKind() << AllocType;
     NoteLValueLocation(Info, Pointer.Base);