diff --git a/report/completion/classes/event/report_viewed.php b/report/completion/classes/event/report_viewed.php
index f8be4c08dd5..ccb8440dad8 100644
--- a/report/completion/classes/event/report_viewed.php
+++ b/report/completion/classes/event/report_viewed.php
@@ -71,5 +71,18 @@ class report_viewed extends \core\event\base {
     public function get_url() {
         return new \moodle_url('/report/completion/index.php', array('course' => $this->courseid));
     }
+
+    /**
+     * custom validations.
+     *
+     * @throws \coding_exception when validation fails.
+     * @return void
+     */
+    protected function validate_data() {
+        parent::validate_data();
+        if ($this->contextlevel != CONTEXT_COURSE) {
+            throw new \coding_exception('Context passed must be course context.');
+        }
+    }
 }
 
diff --git a/report/completion/classes/event/user_report_viewed.php b/report/completion/classes/event/user_report_viewed.php
index dfa1174a2ce..bb52db04889 100644
--- a/report/completion/classes/event/user_report_viewed.php
+++ b/report/completion/classes/event/user_report_viewed.php
@@ -81,5 +81,18 @@ class user_report_viewed extends \core\event\base {
     public function get_url() {
         return new \moodle_url('/report/completion/user.php', array('course' => $this->courseid, 'id' => $this->relateduserid));
     }
+
+    /**
+     * custom validations.
+     *
+     * @throws \coding_exception when validation fails.
+     * @return void
+     */
+    protected function validate_data() {
+        parent::validate_data();
+        if ($this->contextlevel != CONTEXT_COURSE) {
+            throw new \coding_exception('Context passed must be course context.');
+        }
+    }
 }