diff --git a/completion/classes/external.php b/completion/classes/external.php
index dc57b662ffc..dcbad6b9c3c 100644
--- a/completion/classes/external.php
+++ b/completion/classes/external.php
@@ -377,4 +377,84 @@ class core_completion_external extends external_api {
         );
     }
 
+    /**
+     * Describes the parameters for mark_course_self_completed.
+     *
+     * @return external_external_function_parameters
+     * @since Moodle 3.0
+     */
+    public static function mark_course_self_completed_parameters() {
+        return new external_function_parameters (
+            array(
+                'courseid' => new external_value(PARAM_INT, 'Course ID')
+            )
+        );
+    }
+
+    /**
+     * Update the course completion status for the current user (if course self-completion is enabled).
+     *
+     * @param  int $courseid    Course id
+     * @return array            Result and possible warnings
+     * @since Moodle 3.0
+     * @throws moodle_exception
+     */
+    public static function mark_course_self_completed($courseid) {
+        global $USER;
+
+        $warnings = array();
+        $params = self::validate_parameters(self::mark_course_self_completed_parameters(),
+                                            array('courseid' => $courseid));
+
+        $course = get_course($params['courseid']);
+        $context = context_course::instance($course->id);
+        self::validate_context($context);
+
+        // Set up completion object and check it is enabled.
+        $completion = new completion_info($course);
+        if (!$completion->is_enabled()) {
+            throw new moodle_exception('completionnotenabled', 'completion');
+        }
+
+        if (!$completion->is_tracked_user($USER->id)) {
+            throw new moodle_exception('nottracked', 'completion');
+        }
+
+        $completion = $completion->get_completion($USER->id, COMPLETION_CRITERIA_TYPE_SELF);
+
+        // Self completion criteria not enabled.
+        if (!$completion) {
+            throw new moodle_exception('noselfcompletioncriteria', 'completion');
+        }
+
+        // Check if the user has already marked himself as complete.
+        if ($completion->is_complete()) {
+            throw new moodle_exception('useralreadymarkedcomplete', 'completion');
+        }
+
+        // Mark the course complete.
+        $completion->mark_complete();
+
+        $result = array();
+        $result['status'] = true;
+        $result['warnings'] = $warnings;
+        return $result;
+    }
+
+    /**
+     * Describes the mark_course_self_completed return value.
+     *
+     * @return external_single_structure
+     * @since Moodle 3.0
+     */
+    public static function mark_course_self_completed_returns() {
+
+        return new external_single_structure(
+            array(
+                'status'    => new external_value(PARAM_BOOL, 'status, true if success'),
+                'warnings'  => new external_warnings(),
+            )
+        );
+    }
+
 }
diff --git a/completion/tests/externallib_test.php b/completion/tests/externallib_test.php
index c16b29c2654..ebcedc043ac 100644
--- a/completion/tests/externallib_test.php
+++ b/completion/tests/externallib_test.php
@@ -317,4 +317,71 @@ class core_completion_externallib_testcase extends externallib_advanced_testcase
 
     }
 
+    /**
+     * Test mark_course_self_completed
+     */
+    public function test_mark_course_self_completed() {
+        global $DB, $CFG;
+        require_once($CFG->dirroot.'/completion/criteria/completion_criteria_self.php');
+
+        $this->resetAfterTest(true);
+
+        $CFG->enablecompletion = true;
+        $student = $this->getDataGenerator()->create_user();
+        $teacher = $this->getDataGenerator()->create_user();
+
+        $course = $this->getDataGenerator()->create_course(array('enablecompletion' => 1));
+
+        $studentrole = $DB->get_record('role', array('shortname' => 'student'));
+        $this->getDataGenerator()->enrol_user($student->id, $course->id, $studentrole->id);
+
+        // Set completion rules.
+        $completion = new completion_info($course);
+
+        $criteriadata = new stdClass();
+        $criteriadata->id = $course->id;
+        $criteriadata->criteria_activity = array();
+
+        // Self completion.
+        $criteriadata->criteria_self = COMPLETION_CRITERIA_TYPE_SELF;
+        $class = 'completion_criteria_self';
+        $criterion = new $class();
+        $criterion->update_config($criteriadata);
+
+        // Handle overall aggregation.
+        $aggdata = array(
+            'course'        => $course->id,
+            'criteriatype'  => null
+        );
+        $aggregation = new completion_aggregation($aggdata);
+        $aggregation->setMethod(COMPLETION_AGGREGATION_ALL);
+        $aggregation->save();
+
+        $this->setUser($student);
+
+        $result = core_completion_external::mark_course_self_completed($course->id);
+        // We need to execute the return values cleaning process to simulate the web service server.
+        $result = external_api::clean_returnvalue(
+            core_completion_external::mark_course_self_completed_returns(), $result);
+
+        // We expect a valid result.
+        $this->assertEquals(true, $result['status']);
+
+        $result = core_completion_external::get_course_completion_status($course->id, $student->id);
+        // We need to execute the return values cleaning process to simulate the web service server.
+        $result = external_api::clean_returnvalue(
+            core_completion_external::get_course_completion_status_returns(), $result);
+
+        // Course must be completed.
+        $this->assertEquals(COMPLETION_COMPLETE, $result['completionstatus']['completions'][0]['complete']);
+
+        try {
+            $result = core_completion_external::mark_course_self_completed($course->id);
+            $this->fail('Exception expected due course already self completed.');
+        } catch (moodle_exception $e) {
+            $this->assertEquals('useralreadymarkedcomplete', $e->errorcode);
+        }
+
+    }
+
 }
diff --git a/lib/db/services.php b/lib/db/services.php
index 2606f72ca55..381978e07ea 100644
--- a/lib/db/services.php
+++ b/lib/db/services.php
@@ -1075,6 +1075,13 @@ $functions = array(
         'type'        => 'write',
     ),
 
+    'core_completion_mark_course_self_completed' => array(
+        'classname'   => 'core_completion_external',
+        'methodname'  => 'mark_course_self_completed',
+        'description' => 'Update the course completion status for the current user (if course self-completion is enabled).',
+        'type'        => 'write',
+    ),
+
     'core_completion_get_activities_completion_status' => array(
         'classname'     => 'core_completion_external',
         'methodname'    => 'get_activities_completion_status',
@@ -1179,6 +1186,7 @@ $services = array(
             'core_user_remove_user_device',
             'core_course_get_courses',
             'core_completion_update_activity_completion_status_manually',
+            'core_completion_mark_course_self_completed',
             'mod_data_get_databases_by_courses',
             'core_comment_get_comments',
             'mod_forum_view_forum',
diff --git a/version.php b/version.php
index 8c22d493c90..c4d349438a3 100644
--- a/version.php
+++ b/version.php
@@ -29,7 +29,7 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$version  = 2015091000.02;              // YYYYMMDD      = weekly release date of this DEV branch.
+$version  = 2015091000.03;              // YYYYMMDD      = weekly release date of this DEV branch.
                                         //         RR    = release increments - 00 in DEV branches.
                                         //           .XX = incremental changes.