From b3d64722a9f273f023a72718c680557952bc4612 Mon Sep 17 00:00:00 2001
From: jmontoyaa <gugli100@gmail.com>
Date: Tue, 1 Nov 2016 11:52:10 +0100
Subject: [PATCH] Fix PHP warning

---
 main/template/default/auth/courses_categories.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/main/template/default/auth/courses_categories.php b/main/template/default/auth/courses_categories.php
index f364d1c8f0..a773f9acac 100755
--- a/main/template/default/auth/courses_categories.php
+++ b/main/template/default/auth/courses_categories.php
@@ -316,7 +316,7 @@ function returnThumbnail($course)
 
     $html .= '<div class="image">';
     $html .= '<img class="img-responsive" src="'.$course_medium_image.'" alt="'.api_htmlentities($title).'"/>';
-    $categoryTitle = $course['category'];
+    $categoryTitle = isset($course['category']) ? $course['category'] : '';
     if (!empty($categoryTitle)) {
         $listCategory = CourseManager::getCategoriesList();
         $categoryTitle = $listCategory[$categoryTitle];