diff --git a/chrome/content/zotero/integration/addCitationDialog.xul b/chrome/content/zotero/integration/addCitationDialog.xul
index b7665e138..7938af2e2 100644
--- a/chrome/content/zotero/integration/addCitationDialog.xul
+++ b/chrome/content/zotero/integration/addCitationDialog.xul
@@ -61,7 +61,7 @@
 					</hbox>
 					<hbox flex="1" style="margin-top: 5px">
 						<tree id="zotero-collections-tree"
-							style="width: 200px;" hidecolumnpicker="true" seltype="single"
+							style="width: 200px;" hidecolumnpicker="true" seltype="cell"
 							onselect="onCollectionSelected();">
 							<treecols>
 								<treecol