1 files changed, 1 insertions, 1 deletions
diff --git a/tmux.h b/tmux.h
index 20ec044a..4a82871f 100644
--- a/tmux.h
+++ b/tmux.h
@@ -1669,7 +1669,7 @@ void printflike(3, 4) environ_set(struct environ *, const char *, const char *,
 void	environ_clear(struct environ *, const char *);
 void	environ_put(struct environ *, const char *);
 void	environ_unset(struct environ *, const char *);
-void	environ_update(const char *, struct environ *, struct environ *);
+void	environ_update(struct options *, struct environ *, struct environ *);
 void	environ_push(struct environ *);
 void	environ_log(struct environ *, const char *);