diff --git a/package.nix b/package.nix
index 20a80bab4..4d2467559 100644
--- a/package.nix
+++ b/package.nix
@@ -33,7 +33,7 @@
   curl,
   doxygen,
   editline,
-  fileset,
+  fileset ? lib.fileset,
   flex,
   git,
   gtest,