diff --git a/Iceshrimp.Backend/Core/Federation/ActivityPub/ActivityRenderer.cs b/Iceshrimp.Backend/Core/Federation/ActivityPub/ActivityRenderer.cs
index 68700c95..5e8f9780 100644
--- a/Iceshrimp.Backend/Core/Federation/ActivityPub/ActivityRenderer.cs
+++ b/Iceshrimp.Backend/Core/Federation/ActivityPub/ActivityRenderer.cs
@@ -97,7 +97,7 @@ public class ActivityRenderer(
 
 			var e = new ASEmoji
 			{
-				Id    = emoji.PublicUrl,
+				Id    = emoji.Host == null ? $"https://{config.Value.WebDomain}/emoji/{emoji.Name}" : null,
 				Name  = name,
 				Image = new ASImage { Url = new ASLink(emoji.PublicUrl) }
 			};