diff --git a/python-OWSLib.spec b/python-OWSLib.spec
index 5c545e4..09060d7 100644
--- a/python-OWSLib.spec
+++ b/python-OWSLib.spec
@@ -86,7 +86,7 @@ echo 'nbsphinx_allow_errors = True' >> docs/conf.py
 
 
 %generate_buildrequires
-%pyproject_buildrequires -r requirements-dev-filtered.txt
+%pyproject_buildrequires requirements-dev-filtered.txt
 
 
 %build