diff --git a/modules/homelab/services/glance/default.nix b/modules/homelab/services/glance/default.nix
index 03a0c33..1c6ea4d 100644
--- a/modules/homelab/services/glance/default.nix
+++ b/modules/homelab/services/glance/default.nix
@@ -46,11 +46,11 @@ in
     };
     link = lib.mkOption {
       type = lib.types.attrsOf (lib.types.submodule {
-        options.name            =   lib.mkOption { type = lib.types.str; };
-        options.url             =   lib.mkOption { type = lib.types.str; };
-        options.icon            =   lib.mkOption { type = lib.types.str; };
-        options.allow-insecure  =   lib.mkOption { type = lib.types.str; default = false; };
-        options.category        =   lib.mkOption { type = lib.types.str; };
+        options.name            =   lib.mkOption { type = lib.types.nullOr lib.types.str; };
+        options.url             =   lib.mkOption { type = lib.types.nullOr lib.types.str; };
+        options.icon            =   lib.mkOption { type = lib.types.nullOr lib.types.str; };
+        options.allow-insecure  =   lib.mkOption { type = lib.types.nullOr lib.types.str; default = false; };
+        options.category        =   lib.mkOption { type = lib.types.nullOr lib.types.str; };
       });
       default = {};
       description = "configure the service for use in ${service}";