diff --git a/_service b/_service
index c3f64bf..f7978e7 100644
--- a/_service
+++ b/_service
@@ -20,7 +20,7 @@
     </service>
     <service name="perl_regex" mode="buildtime">
         <param name="file">*.spec</param>
-        <param name="regex">s/.*CHOOSE:.*/pytest/g;
+        <param name="regex">s/.*CHOOSE:.*/%pytest/g;
           s/(%{python_sitelib}\/requests)-stdin/\1_stdin/g;
           s/(%autosetup -p1 -n requests)-stdin/\1_stdin/g;
           s/(%{python_sitelib}\/requests_stdin)\n/\1.py\n%pycache_only %{python_sitelib}\/__pycache__\/requests_stdin.*.py*\n%license LICENSE\n%doc README.rst\n/g;</param>