diff --git a/lib/file_system/backends/fs_inotify.ex b/lib/file_system/backends/fs_inotify.ex
index 514dd70698e59a5fa91b65343db9d8fc2514081d..717cbe5d0a470bde122eb3c0aa2732673b539017 100644
--- a/lib/file_system/backends/fs_inotify.ex
+++ b/lib/file_system/backends/fs_inotify.ex
@@ -16,10 +16,10 @@ defmodule FileSystem.Backends.FSInotify do
   The default behaivour to find executable file is finding `inotifywait` from `$PATH`, there're two ways to custom it, useful when run `:file_system` with escript.
 
     * config with `config.exs`
-      `config :file_system, :fs_inotify, executable_file: "YOUR_EXECUTABLE_FILE_PATH"
+      `config :file_system, :fs_inotify, executable_file: "YOUR_EXECUTABLE_FILE_PATH"`
 
     * config with `FILESYSTEM_FSINOTIFY_EXECUTABLE_FILE` os environment
-      `FILESYSTEM_FSINOTIFY_EXECUTABLE_FILE=YOUR_EXECUTABLE_FILE_PATH`
+      FILESYSTEM_FSINOTIFY_EXECUTABLE_FILE=YOUR_EXECUTABLE_FILE_PATH
   """
 
   use GenServer
diff --git a/lib/file_system/backends/fs_mac.ex b/lib/file_system/backends/fs_mac.ex
index 3fbd7ceb64c25b9200eb1631984145dcea856d9c..f24ff2a807e8a8d834a141ed130e88365c1fabf1 100644
--- a/lib/file_system/backends/fs_mac.ex
+++ b/lib/file_system/backends/fs_mac.ex
@@ -27,10 +27,10 @@ defmodule FileSystem.Backends.FSMac do
   The default executable file is `mac_listener` in `priv` dir of `:file_system` application, there're two ways to custom it, useful when run `:file_system` with escript.
 
     * config with `config.exs`
-      `config :file_system, :fs_mac, executable_file: "YOUR_EXECUTABLE_FILE_PATH"
+      `config :file_system, :fs_mac, executable_file: "YOUR_EXECUTABLE_FILE_PATH"`
 
     * config with `FILESYSTEM_FSMAC_EXECUTABLE_FILE` os environment
-      `FILESYSTEM_FSMAC_EXECUTABLE_FILE=YOUR_EXECUTABLE_FILE_PATH`
+      FILESYSTEM_FSMAC_EXECUTABLE_FILE=YOUR_EXECUTABLE_FILE_PATH
   """
 
   use GenServer
diff --git a/lib/file_system/backends/fs_windows.ex b/lib/file_system/backends/fs_windows.ex
index 573b3eb31dc7cb6b7e25678bc6e85e6c0db984d8..2099b035b092b22b90d651e751f2a1af53b6b074 100644
--- a/lib/file_system/backends/fs_windows.ex
+++ b/lib/file_system/backends/fs_windows.ex
@@ -16,10 +16,10 @@ defmodule FileSystem.Backends.FSWindows do
   The default executable file is `inotifywait.exe` in `priv` dir of `:file_system` application, there're two ways to custom it, useful when run `:file_system` with escript.
 
     * config with `config.exs`
-      `config :file_system, :fs_windows, executable_file: "YOUR_EXECUTABLE_FILE_PATH"
+      `config :file_system, :fs_windows, executable_file: "YOUR_EXECUTABLE_FILE_PATH"`
 
     * config with `FILESYSTEM_FSWINDOWS_EXECUTABLE_FILE` os environment
-      `FILESYSTEM_FSWINDOWS_EXECUTABLE_FILE=YOUR_EXECUTABLE_FILE_PATH`
+      FILESYSTEM_FSWINDOWS_EXECUTABLE_FILE=YOUR_EXECUTABLE_FILE_PATH
   """
 
   use GenServer