diff --git a/federationsender/internal/perform.go b/federationsender/internal/perform.go
index 210ca529..ce21d0ed 100644
--- a/federationsender/internal/perform.go
+++ b/federationsender/internal/perform.go
@@ -83,18 +83,6 @@ func (r *FederationSenderInternalAPI) PerformJoin(
 	}
 	request.ServerNames = uniqueList
 
-	// If there are no servers to join via then, well, don't bother.
-	if len(request.ServerNames) == 0 {
-		response.LastError = &gomatrix.HTTPError{
-			Code: 400,
-			Message: `{
-				"errcode": "M_MISSING_PARAM",
-				"error": "No servers were supplied in the request."
-			}`, // TODO: Why do none of our error types play nicely with each other?
-		}
-		return
-	}
-
 	// Try each server that we were provided until we land on one that
 	// successfully completes the make-join send-join dance.
 	var lastErr error