diff --git a/runtime/syntax/javascriptreact.vim b/runtime/syntax/javascriptreact.vim
index fc49691..0067a0b 100644
--- a/runtime/syntax/javascriptreact.vim
+++ b/runtime/syntax/javascriptreact.vim
@@ -1,2 +1,3 @@
-" Placeholder for backwards compatilibity: .jsx used to stand for JavaScript.
+" Placeholder for backwards compatilibity: .jsx used to be associated with the
+" filetpye JavaScript.
 runtime! syntax/javascript.vim