diff --git a/nixos/modules/services/x11/desktop-managers/pantheon.nix b/nixos/modules/services/x11/desktop-managers/pantheon.nix
index 46a15b723e12..8e1272f3c92b 100644
--- a/nixos/modules/services/x11/desktop-managers/pantheon.nix
+++ b/nixos/modules/services/x11/desktop-managers/pantheon.nix
@@ -105,6 +105,7 @@ in
 
           # Settings from elementary-default-settings
           export GTK_CSD=1
+          export GTK_MODULES=$GTK_MODULES:pantheon-filechooser-module
       fi
     '';