diff --git a/lib/i18nTools.js b/lib/i18nTools.js
index db165a611..497c7d528 100644
--- a/lib/i18nTools.js
+++ b/lib/i18nTools.js
@@ -372,7 +372,7 @@ i18nTools.findOccurrences = function (assetGraph, initialAssets) {
         assetGraph.collectAssetsPostOrder(htmlAsset, {type: assetGraph.query.not(['HtmlAnchor', 'HtmlMetaRefresh', 'SvgAnchor'])}).forEach(function (asset) {
             if (asset.isLoaded) {
                 if (asset.type === 'JavaScript') {
-                    if (!asset.incomingRelations.every(isBootstrapperRelation)) {
+                    if (asset.incomingRelations.length === 0 || !asset.incomingRelations.every(isBootstrapperRelation)) {
                         i18nTools.eachTrInAst(asset.parseTree, function (occurrence) {
                             occurrence.asset = asset;
                             (trOccurrencesByKey[occurrence.key] = trOccurrencesByKey[occurrence.key] || []).push(occurrence);