diff --git a/pkgs/desktops/xfce/core/thunar-build.nix b/pkgs/desktops/xfce/core/thunar-build.nix
index 7a69295d34d..a68686219ba 100644
--- a/pkgs/desktops/xfce/core/thunar-build.nix
+++ b/pkgs/desktops/xfce/core/thunar-build.nix
@@ -17,6 +17,10 @@ stdenv.mkDerivation rec {
 
   patches = [ ./thunarx_plugins_directory.patch ];
 
+  postPatch = ''
+    sed -i -e 's|thunar_dialogs_show_insecure_program (parent, _(".*"), file, exec)|1|' thunar/thunar-file.c
+  '';
+
   buildInputs = [
     pkgconfig intltool
     gtk dbus_glib libstartup_notification libnotify libexif pcre udev
@@ -35,4 +39,4 @@ stdenv.mkDerivation rec {
     platforms = stdenv.lib.platforms.linux;
     maintainers = [ stdenv.lib.maintainers.eelco ];
   };
-}
\ No newline at end of file
+}