diff --git a/README.markdown b/README.markdown
index 2bc9df5..96f7027 100644
--- a/README.markdown
+++ b/README.markdown
@@ -14,7 +14,7 @@ After installed. Just press / or ? for search, it will map to :M command.
 You can call EregexToggle funtion to toggle the keymapping. For example, 
 add the following line into your .vimrc file:
 
-    nnoremap <leader>/ :call EregexToggle()<CR>
+    nnoremap <leader>/ :call eregex#toggle()<CR>
 
 Then you can use  &lt;leader>/ to toggle eregex.vim.
 
diff --git a/plugin/eregex.vim b/plugin/eregex.vim
index 48207fa..1997991 100644
--- a/plugin/eregex.vim
+++ b/plugin/eregex.vim
@@ -288,7 +288,7 @@ unlet s:tmp s:maj s:min
 "v260
 let s:enable = 0
 
-function! EregexToggle(...)
+function! eregex#toggle(...)
   let silent = 0
   if exists('a:1') && a:1
     let silent = 1
@@ -309,7 +309,9 @@ function! EregexToggle(...)
   let s:enable = 1 - s:enable
 endfun
 
-call EregexToggle(1)
+if !(exists('g:eregex_default_enable') && g:eregex_default_enable == 0)
+  call eregex#toggle(1)
+endif
 
 "=============================================================================
 "Functions: