diff --git a/pkgs/tools/system/logcheck/default.nix b/pkgs/tools/system/logcheck/default.nix
index d551738b1f3..f27a0cbcb99 100644
--- a/pkgs/tools/system/logcheck/default.nix
+++ b/pkgs/tools/system/logcheck/default.nix
@@ -11,6 +11,7 @@ stdenv.mkDerivation rec {
   };
 
   prePatch = ''
+    # do not set sticky bit in nix store.
     substituteInPlace Makefile --replace 2750 0750
   '';