1 files changed, 1 insertions, 1 deletions
diff --git a/nixos/modules/services/x11/display-managers/default.nix b/nixos/modules/services/x11/display-managers/default.nix
index 91de910662f..65b634f9482 100644
--- a/nixos/modules/services/x11/display-managers/default.nix
+++ b/nixos/modules/services/x11/display-managers/default.nix
@@ -249,7 +249,7 @@ in
         };
 
         execCmd = mkOption {
-          type = types.uniq types.string;
+          type = types.str;
           example = "${pkgs.slim}/bin/slim";
           description = "Command to start the display manager.";
         };