diff --git a/chrome/content/zotero/xpcom/fulltext.js b/chrome/content/zotero/xpcom/fulltext.js
index fb140b672..2179a5a0b 100644
--- a/chrome/content/zotero/xpcom/fulltext.js
+++ b/chrome/content/zotero/xpcom/fulltext.js
@@ -958,7 +958,7 @@ Zotero.Fulltext = Zotero.FullText = new function(){
 			return;
 		}
 		var itemID = item.id;
-		var currentVersion = this.getItemVersion(itemID)
+		var currentVersion = yield this.getItemVersion(itemID)
 		
 		var processorCacheFile = this.getItemProcessorCacheFile(item);
 		var itemCacheFile = this.getItemCacheFile(item);
diff --git a/chrome/content/zotero/xpcom/zotero.js b/chrome/content/zotero/xpcom/zotero.js
index 34bda8fe3..ad35b5168 100644
--- a/chrome/content/zotero/xpcom/zotero.js
+++ b/chrome/content/zotero/xpcom/zotero.js
@@ -1781,7 +1781,7 @@ Services.scriptloader.loadSubScript("resource://zotero/polyfill.js");
 		yield Zotero.DB.executeTransaction(function* () {
 			return Zotero.Tags.purge();
 		});
-		Zotero.Fulltext.purgeUnusedWords();
+		yield Zotero.Fulltext.purgeUnusedWords();
 		yield Zotero.DB.executeTransaction(function* () {
 			return Zotero.Items.purge();
 		});