diff --git a/vim/xdebug.md b/vim/xdebug.md
index aa8f090..a55710e 100644
--- a/vim/xdebug.md
+++ b/vim/xdebug.md
@@ -1,5 +1,7 @@
 # XDebug
 
+- XDebug uses the DBGP protocol
+
 ### Install
 
 ```sh