diff --git a/.README.md b/.README.md
index aab4d11..d26bee5 100644
--- a/.README.md
+++ b/.README.md
@@ -534,7 +534,7 @@ Command|Description
 ---|---
 `l`|List files in current dir.
 `ll`|List including hidden files.
-`lll [DEPTH] [PATH]`|Show file tree.
+`lll [DEPTH] [DIRS]`|Show file tree.
 `llll`|List everything recursively.
 `la`|List alphabetically.
 `laa`|List all alphabetically.
diff --git a/.config/bash/module/ls.sh b/.config/bash/module/ls.sh
index 18113f7..968af32 100644
--- a/.config/bash/module/ls.sh
+++ b/.config/bash/module/ls.sh
@@ -15,21 +15,17 @@ ll()
 }
 
 # list files in tree structure.
-# usage: lll [DEPTH] [FILES]
+# usage: lll [DEPTH] [DIRS]
 lll()
 {
+  local IFS=$'\n'
   local depth="${1}"
-  local target="${@:2}"
+  local target=("${@:2}")
 
-  if [[ "${target}" = "" ]]; then
-    target="."
-  fi
+  [[ "${target}" = "" ]] && target="."
+  [[ "${depth}" = "" ]] && depth=666
 
-  if [[ "${depth}" = "" ]]; then
-    tree -a -- "${target}"
-  else
-    tree -a -L "${depth}" -- "${target}"
-  fi
+  tree -a -L "${depth}" -- "${target[@]}"
 }
 
 # list files recursively.