diff --git a/shell.nix b/shell.nix
index 806ce5ea2..c76f4e99d 100644
--- a/shell.nix
+++ b/shell.nix
@@ -27,10 +27,10 @@ let
 
       cleanup() {
         set +e -x
-        type cleanup_postgres && cleanup_postgres
-        type cleanup_widget_memcached && cleanup_widget_memcached
-        type cleanup_session_memcached && cleanup_session_memcached
-        type cleanup_cache_memcached && cleanup_cache_memcached
+        type cleanup_postgres &>/dev/null && cleanup_postgres
+        type cleanup_widget_memcached &>/dev/null && cleanup_widget_memcached
+        type cleanup_session_memcached &>/dev/null && cleanup_session_memcached
+        type cleanup_cache_memcached &>/dev/null && cleanup_cache_memcached
         set +x
       }