diff --git a/RGBEPP.sh b/RGBEPP.sh
index e3e3ac6..d2d12b0 100644
--- a/RGBEPP.sh
+++ b/RGBEPP.sh
@@ -46,16 +46,16 @@ while true; do
                 *) ARG_F=$2; shift 2 ;;
             esac ;;
         -h|--help)
-            echo -e "\t\t\t\t\tRGB EPP\n\t\t\t\t\tReference Genome based Exon Phylogeny Pipeline\n \
+            echo -e "\t\t\t\t\t\t\tRGB EPP\n\t\t\t\t\tReference Genome based Exon Phylogeny Pipeline\n \
 		       Version: $pkgver\n \
 		       License: GPL-3.0-only\n \
 		       Author: Guoyi Zhang\n \
                       -c\t--contigs\tcontings type: scaffolds or contigs\n \
-                      -g\t--genes\tgene file path\n \
+                      -g\t--genes\t\tgene file path\n \
                       -f\t--functions\tfunctions type (optional): all clean \n \
-                        \t  assembly fasta map pre split merge align\n \
-                      -h\t--help\thelp: show this information\n \
-                      -l\t--list\tlist file path\n \
+                        \t  \t\tassembly fasta map pre split merge align\n \
+                      -h\t--help\t\thelp: show this information\n \
+                      -l\t--list\t\tlist file path\n \
                       -m\t--memory\tmemory settings (optional, default 16 GB)\n \
                       -r\t--reference\treference genome path\n \
                       -t\t--threads\tthreads setting (optional, default 8 threads)\n \