diff --git a/lib/classes/param.php b/lib/classes/param.php
index 0c350a7078f..e33dba51ebd 100644
--- a/lib/classes/param.php
+++ b/lib/classes/param.php
@@ -299,7 +299,13 @@ enum param: string {
 
     /**
      * PARAM_CLEANFILE - deprecated alias of PARAM_FILE; originally was removing regional chars too
+     * @deprecated since 2.0
      */
+    #[deprecated(
+        'param::CLEANFILE',
+        since: '2.0',
+        reason: 'Alias for PARAM_FILE',
+    )]
     case CLEANFILE = 'cleanfile';
 
     /**
diff --git a/lib/moodlelib.php b/lib/moodlelib.php
index 0669b3e9af2..89cb766244b 100644
--- a/lib/moodlelib.php
+++ b/lib/moodlelib.php
@@ -310,6 +310,7 @@ define('PARAM_TIMEZONE', \core\param::TIMEZONE->value);
 
 /**
  * PARAM_CLEANFILE - deprecated alias of PARAM_FILE; originally was removing regional chars too
+ * @deprecated since 2.0
  */
 define('PARAM_CLEANFILE', \core\param::CLEANFILE->value);
 
diff --git a/lib/upgrade.txt b/lib/upgrade.txt
index c64e2ba142f..63a4eb52ec2 100644
--- a/lib/upgrade.txt
+++ b/lib/upgrade.txt
@@ -31,6 +31,7 @@ information provided here is intended especially for developers.
 * A new \core\deprecation class can be used to inspect for deprecated attributes:
   - `\core\deprecation::is_deprecated(example::class);`
   - `\core\deprecation::emit_deprecation_if_present([self::class, 'some_method']);`
+* Added missing deprecation for PARAM_CLEANFILE which was deprecated in Moodle 2.0.
 
 === 4.3 ===