diff --git a/SeafBackup/backup.sh b/SeafBackup/backup.sh
index 15b59c9..e97bb26 100755
--- a/SeafBackup/backup.sh
+++ b/SeafBackup/backup.sh
@@ -104,7 +104,9 @@ function scriptHelp {
     echo -e "information. The following is a brief summary:\n"
     echo -e "${bold}${note}Mandatory parameters:${normal}${default}"
     echo -e "${lit}\n-d, Seafile data directory${default}"
-    echo -e "This is the physical location of your Seafile data."
+    echo -e "This is the physical location of your Seafile DATA."
+    echo -e "${lit}\n-p, Seafile program directory${default}"
+    echo -e "This is the physical location of your Seafile PROGRAM FILES."
     echo -e "${lit}\n-u, Seafile system user account${default}"
     echo -e "The system account Seafile is running under.  Some actions must" \
         "run as this"