diff --git a/pkgs/misc/my-env/default.nix b/pkgs/misc/my-env/default.nix
index 1c0dc0cbfe9b..4b0336b30da9 100644
--- a/pkgs/misc/my-env/default.nix
+++ b/pkgs/misc/my-env/default.nix
@@ -131,7 +131,7 @@ mkDerivation {
         echo "\$tmp/script";
         source "\$tmp/script";
       fi
-      rm -fr "\$tmp"
+      ${pkgs.coreutils}/bin/rm -fr "\$tmp"
       ${extraCmds}
 
       nix_cleanup() {