diff --git a/Iceshrimp.Backend/Core/Federation/ActivityPub/ActivityRenderer.cs b/Iceshrimp.Backend/Core/Federation/ActivityPub/ActivityRenderer.cs
index 62567112..eade9ffe 100644
--- a/Iceshrimp.Backend/Core/Federation/ActivityPub/ActivityRenderer.cs
+++ b/Iceshrimp.Backend/Core/Federation/ActivityPub/ActivityRenderer.cs
@@ -14,7 +14,7 @@ public class ActivityRenderer(
 )
 {
 	private string GenerateActivityId() =>
-		$"https://{config.Value.WebDomain}/activities/{Guid.NewGuid().ToString().ToLowerInvariant()}";
+		$"https://{config.Value.WebDomain}/activities/ephemeral/{Guid.NewGuid().ToString().ToLowerInvariant()}";
 
 	public static ASCreate RenderCreate(ASNote obj, ASObject actor) => new()
 	{