diff --git a/pkgs/os-specific/linux/firejail/default.nix b/pkgs/os-specific/linux/firejail/default.nix
index cf7fe8fc8418..1bbe8dbb160b 100644
--- a/pkgs/os-specific/linux/firejail/default.nix
+++ b/pkgs/os-specific/linux/firejail/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation {
   '';
 
   preBuild = ''
-    sed -e "s@/etc/@$out/etc/@g" -i Makefile
+    sed -e "s@/etc/@$out/etc/@g" -e "/chmod u+s/d" -i Makefile
   '';
 
   meta = {