diff --git a/python-soupsieve.spec b/python-soupsieve.spec
index cf48d83..803f611 100644
--- a/python-soupsieve.spec
+++ b/python-soupsieve.spec
@@ -48,9 +48,7 @@ sed -i 's/coverage.*//' tox.ini
 sed -i 's/\(py\.test.*\)$/\1 \{posargs\}/' tox.ini
 
 %generate_buildrequires
-# pyproject_buildrequires.py fails with
-# ValueError: build backend cannot provide build metadata (incl. runtime requirements) before build.
-%pyproject_buildrequires %{?with_tests:-t} || :
+%pyproject_buildrequires -w %{?with_tests:-t}
 
 %build
 %pyproject_wheel