diff --git a/app/assets/javascripts/cancer_predict.js b/app/assets/javascripts/cancer_predict.js
index 9ee30a5..9baa4f2 100644
--- a/app/assets/javascripts/cancer_predict.js
+++ b/app/assets/javascripts/cancer_predict.js
@@ -55,11 +55,11 @@ $(document).ready(function(){
 		return Math.round(Number(num)*(10**Digit))/(10**Digit);
 	};
 	head_data.done(function(){
-		if(head_images.responseJSON['head_images'] != ''){
-			$('.header-nav').html(head_images.responseJSON['head_images']);
+		if(head_data.responseJSON['head_images'] != ''){
+			$('.header-nav').html(head_data.responseJSON['head_images']);
 		}
-		if(head_images.responseJSON['title'] != ''){
-			$('.navbar-brand').html(head_images.responseJSON['title']);
+		if(head_data.responseJSON['title'] != ''){
+			$('.navbar-brand').html(head_data.responseJSON['title']);
 		}
 		data['danger_texts'] = head_data.responseJSON['danger_texts'];
 		$('head title').text(head_data.responseJSON['page_title'])