diff --git a/main/exercise/TestCategory.php b/main/exercise/TestCategory.php
index e3654480f5..bcabe1d7a4 100644
--- a/main/exercise/TestCategory.php
+++ b/main/exercise/TestCategory.php
@@ -1120,19 +1120,14 @@ class TestCategory
             'number',
             [
                 'title' => '#',
-                'primary' => 'true',
+                'primary' => true,
+                'visible' => false
             ]
         )->add(
             'title',
             'text',
             [
-                'title' => 'title',
-            ]
-        )->add(
-            'description',
-            'text',
-            [
-                'title' => 'description',
+                'title' => get_lang('Name'),
             ]
         );
 
@@ -1149,7 +1144,12 @@ class TestCategory
                 ['class' => 'btn btn-secondary']
             );
             $myRowAction->setRouteParameters(
-                ['id', 'name' => 'exercise/tests_category.php', 'cidReq' => api_get_course_id(), 'action' => 'editcategory']
+                [
+                    'id',
+                    'name' => 'exercise/tests_category.php',
+                    'cidReq' => api_get_course_id(),
+                    'action' => 'editcategory',
+                ]
             );
             $grid->addRowAction($myRowAction);
 
@@ -1161,7 +1161,12 @@ class TestCategory
                 ['class' => 'btn btn-danger', 'form_delete' => true]
             );
             $myRowAction->setRouteParameters(
-                ['id', 'name' => 'exercise/tests_category.php', 'cidReq' => api_get_course_id(), 'action' => 'deletecategory']
+                [
+                    'id',
+                    'name' => 'exercise/tests_category.php',
+                    'cidReq' => api_get_course_id(),
+                    'action' => 'deletecategory',
+                ]
             );
             $grid->addRowAction($myRowAction);
 
diff --git a/main/exercise/tests_category.php b/main/exercise/tests_category.php
index 2c4fe44b12..ced8c89a31 100755
--- a/main/exercise/tests_category.php
+++ b/main/exercise/tests_category.php
@@ -37,8 +37,8 @@ $sessionId = api_get_session_id();
 
 // breadcrumbs
 $interbreadcrumb[] = [
-    "url" => "exercise.php?".api_get_cidreq(),
-    "name" => get_lang('Tests'),
+    'url' => 'exercise.php?'.api_get_cidreq(),
+    'name' => get_lang('Tests'),
 ];
 
 $action = isset($_GET['action']) ? $_GET['action'] : '';
diff --git a/main/inc/lib/ExerciseCategoryManager.php b/main/inc/lib/ExerciseCategoryManager.php
index 70a4db9ac9..1149d924df 100644
--- a/main/inc/lib/ExerciseCategoryManager.php
+++ b/main/inc/lib/ExerciseCategoryManager.php
@@ -323,19 +323,14 @@ JAVASCRIPT;
             'number',
             [
                 'title' => '#',
-                'primary' => 'true',
+                'primary' => true,
+                'visible' => false
             ]
         )->add(
             'name',
             'text',
             [
-                'title' => 'name',
-            ]
-        )->add(
-            'description',
-            'text',
-            [
-                'title' => 'description',
+                'title' => get_lang('Name'),
             ]
         );
         $grid = $grid->getGrid();