diff --git a/tests/modules/services/syncthing/common/extra-options.nix b/tests/modules/services/syncthing/common/extra-options.nix
index 9db9f5940..226a5906b 100644
--- a/tests/modules/services/syncthing/common/extra-options.nix
+++ b/tests/modules/services/syncthing/common/extra-options.nix
@@ -2,6 +2,10 @@
 
 lib.mkMerge [
   {
+    test.stubs.writers = {
+      extraAttrs.writeBash = (name: fn: "@syncthing-wrapper@");
+    };
+
     services.syncthing = {
       enable = true;
       extraOptions = [ "-foo" ''-bar "baz"'' ];