1 files changed, 1 insertions, 0 deletions
diff --git a/tmux.h b/tmux.h
index bc4b0d6c..67cecd6b 100644
--- a/tmux.h
+++ b/tmux.h
@@ -1822,6 +1822,7 @@ char		*paste_make_sample(struct paste_buffer *);
 #define FORMAT_PANE 0x80000000U
 #define FORMAT_WINDOW 0x40000000U
 struct format_tree;
+struct format_modifier;
 const char	*format_skip(const char *, const char *);
 int		 format_true(const char *);
 struct format_tree *format_create(struct client *, struct cmdq_item *, int,