diff --git a/pkgs/servers/matrix-synapse/plugins/rendezvous.nix b/pkgs/servers/matrix-synapse/plugins/rendezvous.nix
index fe1f2469ef2d..c15c24681a2c 100644
--- a/pkgs/servers/matrix-synapse/plugins/rendezvous.nix
+++ b/pkgs/servers/matrix-synapse/plugins/rendezvous.nix
@@ -29,13 +29,8 @@ buildPythonPackage rec {
     maturinBuildHook
   ]);
 
-  preBuild = ''
-    cd synapse
-  '';
+  buildAndTestSubdir = "synapse";
 
-  postBuild = ''
-    cd ..
-  '';
 
   pythonImportsCheck = [ "matrix_http_rendezvous_synapse" ];