diff --git a/nixos/modules/services/x11/display-managers/default.nix b/nixos/modules/services/x11/display-managers/default.nix
index 0e87e6adbab8..bf6b048654b3 100644
--- a/nixos/modules/services/x11/display-managers/default.nix
+++ b/nixos/modules/services/x11/display-managers/default.nix
@@ -109,7 +109,7 @@ let
 
       # Allow the user to setup a custom session type.
       if test -x ~/.xsession; then
-          exec ~/.xsession
+          eval exec ~/.xsession "$@"
       fi
 
       if test "$1"; then