diff --git a/main/exercise/exercise.php b/main/exercise/exercise.php
index ac0133b357..dadeab4ec3 100644
--- a/main/exercise/exercise.php
+++ b/main/exercise/exercise.php
@@ -613,11 +613,11 @@ if ($is_allowedToEdit) {
     );
 }
 if (api_get_configuration_value('allow_exercise_categories') === false) {
-    echo Exercise::exerciseGrid(0,  $keyword);
+    echo Exercise::exerciseGrid(0, $keyword);
 } else {
     if (empty($categoryId)) {
         echo Display::page_subheader(get_lang('NoCategory'));
-        echo Exercise::exerciseGrid(0,  $keyword);
+        echo Exercise::exerciseGrid(0, $keyword);
         $counter = 0;
         $manager = new ExerciseCategoryManager();
         $categories = $manager->getCategories($courseId);
diff --git a/main/inc/lib/SortableTableFromArrayConfig.php b/main/inc/lib/SortableTableFromArrayConfig.php
index 3c6dfdd991..bba9bf7b54 100644
--- a/main/inc/lib/SortableTableFromArrayConfig.php
+++ b/main/inc/lib/SortableTableFromArrayConfig.php
@@ -1,7 +1,6 @@
 <?php
 /* For licensing terms, see /license.txt */
 
-
 /**
  * Sortable table which can be used for data available in an array.
  *
diff --git a/main/inc/lib/pear/HTML/QuickForm/select.php b/main/inc/lib/pear/HTML/QuickForm/select.php
index ed3e34fb32..daa5dbbc76 100755
--- a/main/inc/lib/pear/HTML/QuickForm/select.php
+++ b/main/inc/lib/pear/HTML/QuickForm/select.php
@@ -407,7 +407,6 @@ class HTML_QuickForm_select extends HTML_QuickForm_element
             $strValues = is_array($this->_values)? array_map('strval', $this->_values): array();
 
             foreach ($this->_options as $option) {
-
                 if (!empty($strValues) && in_array($option['attr']['value'], $strValues, true)) {
                     $option['attr']['selected'] = 'selected';
                 }
diff --git a/main/inc/lib/sortable_table.class.php b/main/inc/lib/sortable_table.class.php
index d2bc3adf1a..c1af351fd0 100755
--- a/main/inc/lib/sortable_table.class.php
+++ b/main/inc/lib/sortable_table.class.php
@@ -101,7 +101,6 @@ class SortableTable extends HTML_Table
      */
     public $table_data;
     /**
-     *
      * @var array Columns to hide
      */
     private $columnsToHide = [];