diff --git a/mod/choice/index.php b/mod/choice/index.php
index 0da26a1c043..86c76bcb0be 100644
--- a/mod/choice/index.php
+++ b/mod/choice/index.php
@@ -3,7 +3,7 @@
     require_once("../../config.php");
     require_once("lib.php");
 
-    require_variable($id);   // course
+    $id = required_param('id',0,PARAM_INT);   // course
 
     if (! $course = get_record("course", "id", $id)) {
         error("Course ID is incorrect");
diff --git a/mod/choice/view.php b/mod/choice/view.php
index e1409eee3fd..26c095313a3 100644
--- a/mod/choice/view.php
+++ b/mod/choice/view.php
@@ -3,7 +3,7 @@
     require_once("../../config.php");
     require_once("lib.php");
 
-    require_variable($id);    // Course Module ID
+    $id = required_param('id',0,PARAM_INT);    // Course Module ID
 
     if (! $cm = get_record("course_modules", "id", $id)) {
         error("Course Module ID was incorrect");