diff --git a/packaging/deb/DEBIAN/prerm b/packaging/deb/DEBIAN/prerm
index 943c02948b..e5a7c027a3 100644
--- a/packaging/deb/DEBIAN/prerm
+++ b/packaging/deb/DEBIAN/prerm
@@ -1,9 +1,12 @@
 #!/bin/bash
 
-#path=`pwd`
 insmetaPath="/usr/local/taos/script"
+
+csudo=""
+if command -v sudo > /dev/null; then
+    csudo="sudo"
+fi
+
+${csudo} chmod -R 744 ${insmetaPath}
 cd ${insmetaPath}
-#sudo chmod -R 744 ${insmetaPath}
-sudo ./preun.sh
-
-
+${csudo} ./preun.sh