diff --git a/chrome/content/zotero/xpcom/translation/translators.js b/chrome/content/zotero/xpcom/translation/translators.js
index fe1d41fa7..cb8b73515 100644
--- a/chrome/content/zotero/xpcom/translation/translators.js
+++ b/chrome/content/zotero/xpcom/translation/translators.js
@@ -152,7 +152,7 @@ Zotero.Translators = new function() {
 	 */
 	this.loadFromDisk = function(file) {
 		const infoRe = /^\s*{[\S\s]*?}\s*?[\r\n]/;
-		Zotero.File.getContentsAsync(this.file).then(function(source) {
+		return Zotero.File.getContentsAsync(this.file).then(function(source) {
 			return Zotero.Translators.load(file, infoRe.exec(source)[0], source);
 		}).fail(function() {
 			throw "Invalid or missing translator metadata JSON object in " + file.leafName;