diff --git a/lib/classes/grading_external.php b/lib/classes/grading_external.php
index 27e4d71c76f..9e9ecd1570b 100644
--- a/lib/classes/grading_external.php
+++ b/lib/classes/grading_external.php
@@ -500,7 +500,7 @@ class core_grading_external extends external_api {
     /**
      * Creates a definition stdClass object using the values from the definition
      * array that is passed in as a parameter
-     * 
+     *
      * @param array $definition
      * @return stdClass definition object
      * @since Moodle 2.8
@@ -549,7 +549,7 @@ class core_grading_external extends external_api {
      * Recursively iterates through arrays. Any array without an id key-value combination
      * is assumed to be an array of values to be inserted and an id key-value is added with
      * the value matching the regex '/^NEWID\d+$/' that is expected by each grading form implementation.
-     * 
+     *
      * @param array $arraytoset the array to be processed
      * @param int $startnumber the starting number for the new id numbers
      * @return array with missing id keys added for all arrays
diff --git a/lib/tests/grading_externallib_test.php b/lib/tests/grading_externallib_test.php
index e8ea131cc7c..1ab82b60cbc 100644
--- a/lib/tests/grading_externallib_test.php
+++ b/lib/tests/grading_externallib_test.php
@@ -300,7 +300,7 @@ class core_grading_externallib_testcase extends externallib_advanced_testcase {
     }
 
     /**
-     * 
+     *
      * Test save_definitions for rubric grading method
      */
     public function test_save_definitions_rubric() {
@@ -539,7 +539,7 @@ class core_grading_externallib_testcase extends externallib_advanced_testcase {
     }
 
     /**
-     * 
+     *
      * Tests save_definitions for the marking guide grading method
      */
     public function test_save_definitions_marking_guide() {