diff --git a/python-flexcache.spec b/python-flexcache.spec
index 4fd7fc5..8d9793c 100644
--- a/python-flexcache.spec
+++ b/python-flexcache.spec
@@ -27,7 +27,7 @@ Summary:        %{summary}
 %prep
 %autosetup -n flexcache-%{version}
 # https://docs.fedoraproject.org/en-US/packaging-guidelines/Python/#_linters
-sed -r -i 's/^([[:blank:]]*)("pytest-cov")/\1# \2/' pyproject.toml
+sed -r -i 's/^([[:blank:]]*)\b(pytest-cov)\b/\1# \2/' setup.cfg
 
 
 %generate_buildrequires