diff --git a/phpBB/docs/events.md b/phpBB/docs/events.md
index 3e72be3e41..d8606c7e4c 100644
--- a/phpBB/docs/events.md
+++ b/phpBB/docs/events.md
@@ -1601,14 +1601,14 @@ notification_dropdown_footer_after
 ===
 * Locations:
     + styles/prosilver/template/notification_dropdown.html
-* Since: prep-release-3.3.12
+* Since: 3.3.12-prep-release
 * Purpose: Add content after notifications list footer.
 
 notification_dropdown_footer_before
 ===
 * Locations:
     + styles/prosilver/template/notification_dropdown.html
-* Since: prep-release-3.3.12
+* Since: 3.3.12-prep-release
 * Purpose: Add content before notifications list footer.
 
 overall_footer_after
diff --git a/phpBB/phpbb/event/md_exporter.php b/phpBB/phpbb/event/md_exporter.php
index 1a16a17413..7182ce697f 100644
--- a/phpBB/phpbb/event/md_exporter.php
+++ b/phpBB/phpbb/event/md_exporter.php
@@ -489,7 +489,7 @@ class md_exporter
 	*/
 	public function validate_version($version)
 	{
-		return preg_match('#^\d+\.\d+\.\d+(?:-(?:a|b|RC|pl)\d+)?$#', $version);
+		return preg_match('#^\d+\.\d+\.\d+(?:-(?:a|b|RC|pl)\d+|(?:-prep-release))?$#', $version);
 	}
 
 	/**