diff --git a/python-mailman.spec b/python-mailman.spec
index 5166d38..419cee6 100644
--- a/python-mailman.spec
+++ b/python-mailman.spec
@@ -100,6 +100,7 @@ Mailman -- the GNU mailing list manager
 %patch0 -p1
 
 %build
+sed -i 's:/sbin:/usr/bin:' src/mailman/config/mailman.cfg
 pushd src/mailman
 for i in $(grep -r '^from importlib_resources' | sed 's/\(.*\.py\):.*/\1/'); do
   line=$(grep '^from importlib_resources' $i)
@@ -109,7 +110,6 @@ done
 popd
 sed '/importlib_resources/d' -i src/mailman.egg-info/requires.txt setup.py
 %python_build
-sed -i 's:/sbin:/usr/bin:' src/mailman/config/mailman.cfg
 
 %install
 %if !%{with test}