diff --git a/protocols/console_support.h b/protocols/console_support.h
index dfd5d22..10713f2 100644
--- a/protocols/console_support.h
+++ b/protocols/console_support.h
@@ -31,6 +31,13 @@
 #define EFI_SCANCODE_FN10 0x14
 #define EFI_SCANCODE_ESC 0x17
 
+// EFI special characters
+#define EFI_CHAR_NULL 0x0000
+#define EFI_CHAR_BACKSPACE 0x0008
+#define EFI_CHAR_TAB 0x0009
+#define EFI_CHAR_LINEFEED 0x000A
+#define EFI_CHAR_CARRIAGE_RETURN 0x000D
+
 typedef struct _EFI_SIMPLE_TEXT_INPUT_PROTOCOL EFI_SIMPLE_TEXT_INPUT_PROTOCOL;
 
 typedef struct {