1 files changed, 1 insertions, 0 deletions
diff --git a/tmux.h b/tmux.h
index 24e4277f..3ec89019 100644
--- a/tmux.h
+++ b/tmux.h
@@ -1171,6 +1171,7 @@ struct tty_term {
 #define TERM_NOXENL 0x2
 #define TERM_DECSLRM 0x4
 #define TERM_DECFRA 0x8
+#define TERM_RGBCOLOURS 0x10
 	int		 flags;
 
 	LIST_ENTRY(tty_term) entry;