diff --git a/src/main/server.cl b/src/main/server.cl
index b8986cd..78f9595 100644
--- a/src/main/server.cl
+++ b/src/main/server.cl
@@ -190,7 +190,7 @@ Server Response-Header."))
   (ignore-errors
     (let ((response
 	   (make-instance
-	    (get-error-response-using-server server connection condition)
+	    (get-error-response-class-using-server server connection condition)
 	    :server server
 	    :status-code +HTTP-Code-Internal-Server-Error+
 	    :entity