diff --git a/build-ubunturepo b/build-ubunturepo
index 44eee4fb3..c9774980a 100755
--- a/build-ubunturepo
+++ b/build-ubunturepo
@@ -260,7 +260,7 @@ __EOF__
     fi
 
     # Decide whether to upload or not
-    if [ "$UP" != 1 ]; then
+    if [ -n "$UP" ] && [ "$UP" == 0 ]; then
         echo "No need to upload"
         cd $old_pwd
         exit 0
@@ -351,7 +351,7 @@ __EOF__
     chgrp xcat $dep_tar_name
     chmod g+w $dep_tar_name
 
-    if [ "$UP" != 1 ];then
+    if [ -n "$UP" ] && [ "$UP" == 0 ];then
         echo "No need to upload the dep packages"
         cd $old_pwd
         exit 0