diff --git a/flake.nix b/flake.nix
index c39c77a..fd1d971 100644
--- a/flake.nix
+++ b/flake.nix
@@ -84,7 +84,7 @@
 
         config = lib.mkIf config.photocatalog.enable {
           environment.systemPackages = [ self.packages.${pkgs.system}.photocatalog ];
-          systemd.services = lib.mapAttrs (_: sync:
+          systemd.services = lib.mapAttrs' (name: sync: nameValuePair (lib.replaceStrings ["/"] ["-"] sync.source)
             {
                 name = "photocatalog_${lib.replaceStrings ["/"] ["-"] sync.source}";
                 after = [ "local-fs.target" ];