diff --git a/step-web/src/main/webapp/js/backbone/views/view_quick_lexicon.js b/step-web/src/main/webapp/js/backbone/views/view_quick_lexicon.js
index 7d8486e210..fb8e576024 100644
--- a/step-web/src/main/webapp/js/backbone/views/view_quick_lexicon.js
+++ b/step-web/src/main/webapp/js/backbone/views/view_quick_lexicon.js
@@ -197,7 +197,7 @@ var QuickLexicon = Backbone.View.extend({
         if (strongNumbers.length == 1)
             strongNumbers = this.strong.split(",");
 //        if ((typeof this.morph !== "undefined") && (this.morph.indexOf('TOS:') == 0)) {
-        if ((typeof this.morph === "string") && (strongNumbers.length > 0) && (strongNumbers.substring(0, 1) === "H"))
+        if ((typeof this.morph === "string") && (strongNumbers.length > 0) && (strongNumbers[0].substring(0, 1) === "H"))
             lastMorphCode = this.morph;
 		if ((typeof self.reference === "string") && (typeof self.strong === "string"))
 			step.previousSideBarLexiconRef = [self.strong, self.reference];