diff --git a/pkgs/applications/networking/browsers/firefox/wrapper.nix b/pkgs/applications/networking/browsers/firefox/wrapper.nix
index 409f7d29ba2..db51dc8b148 100644
--- a/pkgs/applications/networking/browsers/firefox/wrapper.nix
+++ b/pkgs/applications/networking/browsers/firefox/wrapper.nix
@@ -47,7 +47,6 @@ stdenv.mkDerivation {
 
     ${ lib.optionalString libtrick
     ''
-    sed -e "s@exec @exec -a '$out/bin/${browserName}${nameSuffix}' @" -i "$out/bin/${browserName}${nameSuffix}"
     libdirname="$(echo "${browser}/lib/${browserName}"*)"
     libdirbasename="$(basename "$libdirname")"
     mkdir -p "$out/lib/$libdirbasename"