diff --git a/pkgs/applications/display-managers/lightdm-gtk-greeter/default.nix b/pkgs/applications/display-managers/lightdm-gtk-greeter/default.nix
index 13740dd9dfd..a54f0a49921 100644
--- a/pkgs/applications/display-managers/lightdm-gtk-greeter/default.nix
+++ b/pkgs/applications/display-managers/lightdm-gtk-greeter/default.nix
@@ -28,6 +28,8 @@ stdenv.mkDerivation rec {
     "--sysconfdir=/etc"
   ] ++ stdenv.lib.optional useGTK2 "--with-gtk2";
 
+  NIX_CFLAGS_COMPILE = [ "-Wno-error=deprecated-declarations" ];
+
   installFlags = [
     "localstatedir=\${TMPDIR}"
     "sysconfdir=\${out}/etc"