From d0d9608e01e74cf67353dd5c0bc56bb687a55971 Mon Sep 17 00:00:00 2001
From: Django van der Heijden
 <60142790+djangovanderheijden@users.noreply.github.com>
Date: Tue, 1 Jul 2025 12:10:15 +0200
Subject: [PATCH] Bugfix: check whether self._info is not None before accessing
 its indirect_reference property

---
 pypdf/_writer.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pypdf/_writer.py b/pypdf/_writer.py
index cf50ca0bf..7dd684239 100644
--- a/pypdf/_writer.py
+++ b/pypdf/_writer.py
@@ -1671,7 +1671,8 @@ def replace_in_obj(
         # remove orphans (if applicable)
         orphans[self.root_object.indirect_reference.idnum - 1] = False  # type: ignore
 
-        orphans[self._info.indirect_reference.idnum - 1] = False  # type: ignore
+        if self._info is not None:
+            orphans[self._info.indirect_reference.idnum - 1] = False  # type: ignore
 
         try:
             orphans[self._ID.indirect_reference.idnum - 1] = False  # type: ignore