diff --git a/Lagrange.Core/Message/Filter/Rule/OldAndInvalidImageFilterRule.cs b/Lagrange.Core/Message/Filter/Rule/OldAndInvalidImageFilterRule.cs
index 3e81368db..9cf5d0a52 100644
--- a/Lagrange.Core/Message/Filter/Rule/OldAndInvalidImageFilterRule.cs
+++ b/Lagrange.Core/Message/Filter/Rule/OldAndInvalidImageFilterRule.cs
@@ -14,7 +14,7 @@ public IEnumerable<int> Apply(MessageChain chain)
         var result = new List<int>();
         var groups = images.GroupBy((image) =>
             {
-                if (!Uri.IsWellFormedUriString(image.ImageUrl, UriKind.RelativeOrAbsolute)) return ImageType.Invalid;
+                if (!Uri.IsWellFormedUriString(image.ImageUrl, UriKind.Absolute)) return ImageType.Invalid;
 
                 Uri uri = new Uri(image.ImageUrl);