diff --git a/configs/nixos/modules/services/copyparty.nix b/configs/nixos/modules/services/copyparty.nix
index 5641961..d574d21 100644
--- a/configs/nixos/modules/services/copyparty.nix
+++ b/configs/nixos/modules/services/copyparty.nix
@@ -113,7 +113,7 @@ in
         lib.types.submodule {
           options = {
             path = lib.mkOption {
-              type = lib.types.str;
+              type = lib.types.externalPath;
               description = "Filesystem path served by this volume.";
             };