diff --git a/PROTOCOL.md b/PROTOCOL.md
index 9100f5c5..7e304101 100644
--- a/PROTOCOL.md
+++ b/PROTOCOL.md
@@ -288,6 +288,8 @@ direct map.
 
 ### Terminal Feature
 
+Note: *This feature is deprecated, do not use if possible.*
+
 ID:
 ```c
 #define LIMINE_TERMINAL_REQUEST { LIMINE_COMMON_MAGIC, 0xc8ac59310c2b0844, 0xa68d0c7265d38878 }