diff --git a/phpBB/includes/ucp/ucp_activate.php b/phpBB/includes/ucp/ucp_activate.php
index 82c1937919..1177d55c12 100644
--- a/phpBB/includes/ucp/ucp_activate.php
+++ b/phpBB/includes/ucp/ucp_activate.php
@@ -51,7 +51,7 @@ class ucp_activate
 			trigger_error('ALREADY_ACTIVATED');
 		}
 
-		if (($user_row['user_inactive_reason'] ==  INACTIVE_MANUAL) || $user_row['user_actkey'] != $key)
+		if (($user_row['user_inactive_reason'] ==  INACTIVE_MANUAL) || $user_row['user_actkey'] !== $key)
 		{
 			trigger_error('WRONG_ACTIVATION');
 		}