diff --git a/ts/WoltLabSuite/Core/Component/Attachment/List.ts b/ts/WoltLabSuite/Core/Component/Attachment/List.ts
index 656ff48481..a32e0e13e6 100644
--- a/ts/WoltLabSuite/Core/Component/Attachment/List.ts
+++ b/ts/WoltLabSuite/Core/Component/Attachment/List.ts
@@ -172,7 +172,7 @@ function observeInsertedAttachments(element: HTMLElement, files: HTMLCollectionO
     embeddedAttachments.add(attachmentId);
   });
 
-  const bbcodeMatches = editor.element.innerText.matchAll(/\[attach=('\d+'|"\d+"|\d+)(?:,[^]]+?)?\]\[\/attach\]/g);
+  const bbcodeMatches = editor.element.innerText.matchAll(/\[attach=(?:'|")?(\d+)(?:'|")?(?:,[^]]+?)?]\[\/attach]/g);
   for (const match of bbcodeMatches) {
     const attachmentId = parseInt(match[1]);
     embeddedAttachments.add(attachmentId);