diff --git a/src/BirdsiteLive.Domain/ActivityPubService.cs b/src/BirdsiteLive.Domain/ActivityPubService.cs
index 64f5705..7101c23 100644
--- a/src/BirdsiteLive.Domain/ActivityPubService.cs
+++ b/src/BirdsiteLive.Domain/ActivityPubService.cs
@@ -96,7 +96,7 @@ namespace BirdsiteLive.Domain
             var httpRequestMessage = new HttpRequestMessage
             {
                 Method = HttpMethod.Post,
-                RequestUri = new Uri($"https://{targetHost}/{usedInbox}"),
+                RequestUri = new Uri($"https://{targetHost}{usedInbox}"),
                 Headers =
                 {
                     {"Host", targetHost},