diff --git a/install-frps.sh b/install-frps.sh
index d5458cf..58a682a 100644
--- a/install-frps.sh
+++ b/install-frps.sh
@@ -268,13 +268,13 @@ fun_download_file(){
     # download
     if [ ! -s ${str_program_dir}/${program_name} ]; then
         rm -fr ${program_latest_filename} frp_${FRPS_VER}_linux_${ARCHS}
-		echo -e "Downloading ${program_name}..."
-		echo ""
+	echo -e "Downloading ${program_name}..."
+	echo ""
         curl -L --progress-bar "${program_latest_file_url}" -o "${program_latest_filename}" 2>&1 | show_progress
-	    echo ""		
+	echo ""		
 	if [ $? -ne 0 ]; then
         echo -e " ${COLOR_RED}Download failed${COLOR_END}"
-		exit 1
+	exit 1
     fi
 	
     # Verify the downloaded file exists and is not empty
@@ -283,7 +283,7 @@ fun_download_file(){
       exit 1
     fi		
       echo -e "Extracting ${program_name}..."
-	  echo ""
+      echo ""
 	  
       tar xzf ${program_latest_filename}
       mv frp_${FRPS_VER}_linux_${ARCHS}/frps ${str_program_dir}/${program_name}
@@ -322,16 +322,16 @@ show_progress() {
 
     printf "\r${GREEN}%2d%% [" "$PERCENTAGE"
     for ((i = 0; i < completed; i++)); do
-	 if [ $i -eq $((completed - 1)) ]; then
+     if [ $i -eq $((completed - 1)) ]; then
       printf ">"
      else
-	  printf "="
-	 fi
-	done
+      printf "="
+     fi
+    done
     for ((i = 0; i < remaining; i++)); do
       printf " "
     done
-    printf "]${NC}"
+      printf "]${NC}"
 
     CURRENT_SIZE=$((CURRENT_SIZE + $((RANDOM % 50000 + 1))))
     sleep 0.05