diff --git a/scripts/create-mkspec.sh b/scripts/create-mkspec.sh
index c22f9bf7..1f1e47aa 100644
--- a/scripts/create-mkspec.sh
+++ b/scripts/create-mkspec.sh
@@ -123,9 +123,14 @@ EOT
 value global.subpackages | grep -q run && _cat << EOT
 	|echo "%files -n \$NAME-run -f \$INSTALL_LOG.\$NAME-run"
 EOT
-value global.subpackages | grep -q devel && _cat << EOT
+if value global.subpackages | grep -q devel; then _cat << EOT
 	|echo "%files -n \$NAME-devel -f \$INSTALL_LOG.\$NAME-devel"
 EOT
+else
+	_cat << EOT
+	|echo "%exclude /opt/\$NAME/make/*.mk"
+EOT
+fi
 		_cat << EOT
 	|echo '%defattr (-, root, root)'
 EOT