diff --git a/chrome/content/zotero/zoteroPane.xul b/chrome/content/zotero/zoteroPane.xul
index 36c8a7f7fb..c137e0da32 100644
--- a/chrome/content/zotero/zoteroPane.xul
+++ b/chrome/content/zotero/zoteroPane.xul
@@ -517,7 +517,8 @@
 									class="treecol-image"
 									label="&zotero.tabs.attachments.label;"
 									src="chrome://zotero/skin/attach-small.png"
-									zotero-persist="width ordinal hidden sortActive sortDirection"/>
+									fixed="true"
+									zotero-persist="ordinal hidden sortActive sortDirection"/>
 								<splitter class="tree-splitter"/>
 								<treecol
 									id="zotero-items-column-numNotes" hidden="true"