diff --git a/lass/2configs/repo-sync.nix b/lass/2configs/repo-sync.nix
index aaeae7b73..1d947f8ae 100644
--- a/lass/2configs/repo-sync.nix
+++ b/lass/2configs/repo-sync.nix
@@ -77,6 +77,7 @@ in {
   krebs.repo-sync = {
     enable = true;
     privateKeyFile = toString <secrets/repo-sync.key>;
+    unitConfig.ConditionPathExists = "!/var/run/ppp0.pid";
   };
   imports = [
     (sync-remote "array" "https://github.com/makefu/array")