diff --git a/lib/usernoprofileexception.php b/lib/usernoprofileexception.php
index 6744d2529d..e0186fef97 100644
--- a/lib/usernoprofileexception.php
+++ b/lib/usernoprofileexception.php
@@ -55,7 +55,9 @@ class UserNoProfileException extends ServerException
     {
         $this->user = $user;
 
-        $message = sprintf(_("User %s (%d) has no profile record."),
+        // TRANS: Exception text shown when no profile can be found for a user.
+        // TRANS: %1$s is a user nickname, $2$d is a user ID (number).
+        $message = sprintf(_("User %1$s (%2$d) has no profile record."),
                            $user->nickname, $user->id);
 
         parent::__construct($message);