diff --git a/README.md b/README.md
index 1b7dcd7a..fac38de9 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,10 @@ Key differences:
 * Syntax fold. Fold long code block, semantically!
 * Remove old, unused syntax definitions.
 
+Config
+----
+`let g:yats_host_keyword = 1`: configure yats to highlight host specific keywords like `addEventListener`. Default is 1. Set it 0 to turn off highlighting.
+
 Credits
 -------
 
diff --git a/syntax/common.vim b/syntax/common.vim
index 24fd2252..a5d4de2a 100644
--- a/syntax/common.vim
+++ b/syntax/common.vim
@@ -30,7 +30,9 @@ runtime syntax/basic/doc.vim
 runtime syntax/basic/type.vim
 
 " extension
-runtime syntax/yats.vim
+if get(g:, 'yats_host_keyword', 1)
+  runtime syntax/yats.vim
+endif
 
 " patch
 runtime syntax/basic/patch.vim