diff --git a/documentation/en/cli-lotus.md b/documentation/en/cli-lotus.md
index d617ac68469..cdc95136b67 100644
--- a/documentation/en/cli-lotus.md
+++ b/documentation/en/cli-lotus.md
@@ -1595,8 +1595,18 @@ OPTIONS:
    --help, -h  show help (default: false)
    
 ```
-# nage
+
+### lotus mpool manage
 ```
+NAME:
+   lotus mpool manage - 
+
+USAGE:
+   lotus mpool manage [command options] [arguments...]
+
+OPTIONS:
+   --help, -h  show help (default: false)
+   
 ```
 
 ## lotus state
diff --git a/scripts/generate-lotus-cli.py b/scripts/generate-lotus-cli.py
index 1d33687ae60..7999603b277 100644
--- a/scripts/generate-lotus-cli.py
+++ b/scripts/generate-lotus-cli.py
@@ -31,12 +31,11 @@ def get_cmd_recursively(cur_cmd):
                 if cmd_flag is True and line == '':
                     cmd_flag = False
                 if cmd_flag is True and line[-1] != ':' and 'help, h' not in line:
-                    gap_pos = 0
+                    gap_pos = None
                     sub_cmd = line
                     if ' ' in line:
                         gap_pos = sub_cmd.index('  ')
-                    if gap_pos:
-                        sub_cmd = cur_cmd + ' ' + sub_cmd[:gap_pos]
+                    sub_cmd = cur_cmd + ' ' + sub_cmd[:gap_pos]
                     get_cmd_recursively(sub_cmd)
             except Exception as e:
                 print('Fail to deal with "%s" with error:\n%s' % (line, e))