diff --git a/lib/constants/url.dart b/lib/constants/url.dart
index b45bcf6..d46a6ee 100644
--- a/lib/constants/url.dart
+++ b/lib/constants/url.dart
@@ -28,7 +28,7 @@ const noticeUrl = '$baseUrl/home.php?mod=space&do=notice';
 const readNoticeUrl = '$baseUrl/home.php?mod=space&do=notice&isread=1';
 
 /// Private personal messages.
-const personalMessageUrl = '$baseUrl/home.php?mod=space&do=pm&private&H4652[!';
+const personalMessageUrl = '$baseUrl/home.php?mod=space&do=pm&filter=privatepm';
 
 /// Broadcast messages.
 const broadcastMessageUrl =