diff --git a/README.md b/README.md
index 2ea032e5..8af3f1b4 100644
--- a/README.md
+++ b/README.md
@@ -35,6 +35,8 @@ Automatically displays all buffers when there's only one tab open.  This is disa
 
 ![tabline](https://f.cloud.github.com/assets/306502/1072623/44c292a0-1495-11e3-9ce6-dcada3f1c536.gif)
 
+Note: This extension only works in terminal vim at the moment.
+
 ## Seamless integration
 
 vim-airline integrates with a variety of plugins out of the box.  These extensions will be lazily loaded if and only if you have the other plugins installed (and of course you can turn them off).
diff --git a/doc/airline.txt b/doc/airline.txt
index 259f9e01..190fcec3 100644
--- a/doc/airline.txt
+++ b/doc/airline.txt
@@ -302,7 +302,7 @@ virtualenv <https://github.com/jmcantrell/vim-virtualenv>
 * configure filename match rules to exclude from the tabline. >
   let g:airline#extensions#tabline#excludes = []
 <
-Note: You will likely want to set |showtabline| to 2.
+Note: This extension only works in terminal vim at the moment.
 
 ==============================================================================
 ADVANCED CUSTOMIZATION                      *airline-advanced-customization*