diff --git a/chrome/content/zotero/xpcom/db.js b/chrome/content/zotero/xpcom/db.js
index 151886369d..279165b927 100644
--- a/chrome/content/zotero/xpcom/db.js
+++ b/chrome/content/zotero/xpcom/db.js
@@ -1090,6 +1090,15 @@ Zotero.DBConnection.prototype.backupDatabase = Zotero.Promise.coroutine(function
 });
 
 
+/**
+ * Escape '_', '%', and '\' in an SQL LIKE expression so that it can be used with ESCAPE '\' to
+ * prevent the wildcards from having special meaning
+ */
+Zotero.DBConnection.prototype.escapeSQLExpression = function (expr) {
+	return expr.replace(/([_%\\])/g, '\\$1');
+};
+
+
 /////////////////////////////////////////////////////////////////
 //
 // Private methods
diff --git a/chrome/content/zotero/xpcom/utilities_internal.js b/chrome/content/zotero/xpcom/utilities_internal.js
index 1c4cedc555..a7ac0bbdd9 100644
--- a/chrome/content/zotero/xpcom/utilities_internal.js
+++ b/chrome/content/zotero/xpcom/utilities_internal.js
@@ -1164,15 +1164,6 @@ Zotero.Utilities.Internal = {
 	},
 	
 	
-	/**
-	 * Escape '_', '%', and '\' in an SQL LIKE expression so that it can be used with ESCAPE '\' to
-	 * prevent the wildcards from having special meaning
-	 */
-	escapeSQLExpression: function (expr) {
-		return expr.replace(/([_%\\])/g, '\\$1');
-	},
-	
-	
 	buildLibraryMenu: function (menulist, libraries, selectedLibraryID) {
 		var menupopup = menulist.firstChild;
 		while (menupopup.hasChildNodes()) {
diff --git a/components/zotero-autocomplete.js b/components/zotero-autocomplete.js
index 60c3773a23..f41b944baa 100644
--- a/components/zotero-autocomplete.js
+++ b/components/zotero-autocomplete.js
@@ -72,7 +72,7 @@ ZoteroAutoComplete.prototype.startSearch = Zotero.Promise.coroutine(function* (s
 		
 		case 'tag':
 			var sql = "SELECT DISTINCT name AS val, NULL AS comment FROM tags WHERE name LIKE ? ESCAPE '\\'";
-			var sqlParams = [Zotero.Utilities.Internal.escapeSQLExpression(searchString) + '%'];
+			var sqlParams = [Zotero.DB.escapeSQLExpression(searchString) + '%'];
 			if (searchParams.libraryID !== undefined) {
 				sql += " AND tagID IN (SELECT tagID FROM itemTags JOIN items USING (itemID) "
 					+ "WHERE libraryID=?)";