diff --git a/doc/indent_guides.txt b/doc/indent_guides.txt
index 6597bd5..a3b7d9b 100644
--- a/doc/indent_guides.txt
+++ b/doc/indent_guides.txt
@@ -168,6 +168,14 @@ map it to other keys. For example:
   :nmap <silent> <Leader>ig <Plug>IndentGuidesToggle
 <
 
+The plugin will not provide the default mapping if either:
+  * You already have something mapped to <Plug>IndentGuidesToggle.
+  * You are already using the <Leader>ig key sequence.
+  * You set to 0 the variable g:indent_guides_default_mapping:
+>
+  let g:indent_guides_default_mapping=0
+<
+
 You can also map some other commands that are not mapped by default. For
 example:
 >
diff --git a/plugin/indent_guides.vim b/plugin/indent_guides.vim
index 8664add..b966b5c 100644
--- a/plugin/indent_guides.vim
+++ b/plugin/indent_guides.vim
@@ -53,6 +53,7 @@ call s:InitVariable('g:indent_guides_start_level',           1 )
 call s:InitVariable('g:indent_guides_enable_on_vim_startup', 0 )
 call s:InitVariable('g:indent_guides_debug',                 0 )
 call s:InitVariable('g:indent_guides_space_guides',          1 )
+call s:InitVariable('g:indent_guides_default_mapping',       1 )
 
 if !exists('g:indent_guides_exclude_filetypes')
   let g:indent_guides_exclude_filetypes = ['help']
@@ -60,6 +61,7 @@ endif
 
 " Default mapping
 if !hasmapto('<Plug>IndentGuidesToggle', 'n') && maparg('<Leader>ig', 'n') == ''
+    \ && g:indent_guides_default_mapping != 0
   nmap <silent><unique> <Leader>ig <Plug>IndentGuidesToggle
 endif