diff --git a/chrome/content/zotero/xpcom/collectionTreeView.js b/chrome/content/zotero/xpcom/collectionTreeView.js
index 252bce35a7..34189e83f8 100644
--- a/chrome/content/zotero/xpcom/collectionTreeView.js
+++ b/chrome/content/zotero/xpcom/collectionTreeView.js
@@ -1872,10 +1872,10 @@ Zotero.ItemGroupCache = {
 	"clear":function() {
 		this.lastItemGroup = null;
 		this.lastSearch = null;
-		this.lastTempTable = null;
 		if(this.lastTempTable) {
 			Zotero.DB.query("DROP TABLE "+this.lastTempTable);
 		}
+		this.lastTempTable = null;
 		this.lastResults = null;
 	}
 };