diff --git a/svx/source/svdraw/svdundo.cxx b/svx/source/svdraw/svdundo.cxx
index 0a793f2..3b6f676 100644
--- a/svx/source/svdraw/svdundo.cxx
+++ b/svx/source/svdraw/svdundo.cxx
@@ -764,11 +764,14 @@ void SdrUndoInsertObj::Undo()
     {
         ImplUnmarkObject( pObj );
 
-#ifdef DBG_UTIL
-        SdrObject* pChkObj=
-#endif
-        pObjList->RemoveObject(nOrdNum);
-        DBG_ASSERT(pChkObj==pObj,"UndoInsertObj: RemoveObjNum!=pObj");
+        SdrObject* pChkObj= pObjList->GetObj(nOrdNum);
+        if (pChkObj != pObj) // our tangled arithmetic failed fdo#34548
+        {
+            nOrdNum = pObj->GetOrdNum();
+        }
+
+        pChkObj = pObjList->RemoveObject(nOrdNum);
+        assert (pChkObj == pObj);
     }
 }