diff --git a/chrome/content/zotero/tools/testTranslators/translatorTester.js b/chrome/content/zotero/tools/testTranslators/translatorTester.js
index 502042156f..854dc58de4 100644
--- a/chrome/content/zotero/tools/testTranslators/translatorTester.js
+++ b/chrome/content/zotero/tools/testTranslators/translatorTester.js
@@ -142,9 +142,9 @@ Zotero_TranslatorTesters = new function() {
 Zotero_TranslatorTester = function(translator, type, debugCallback) {
 	this.type = type;
 	this.translator = translator;
-	this.translator.runMode = Zotero.Translator.RUN_MODE_IN_BROWSER;
 	this.output = "";
 	this.isSupported = this.translator.runMode === Zotero.Translator.RUN_MODE_IN_BROWSER;
+	this.translator.runMode = Zotero.Translator.RUN_MODE_IN_BROWSER;
 	
 	this.tests = [];
 	this.pending = [];