diff --git a/operation/99finish_install.sh b/operation/99finish_install.sh
index abfb44c..b0250c6 100755
--- a/operation/99finish_install.sh
+++ b/operation/99finish_install.sh
@@ -9,7 +9,5 @@ do
     rm ${pa_file}
 done
 
-if  ls $pkg_dir | grep -q "-serv.conf" ;then
-  rm $pkg_dir/*-serv.conf
-fi
+rm -f $pkg_dir/*-serv.conf