diff --git a/include/s_user.h b/include/s_user.h
index d1d6cfb..734125d 100644
--- a/include/s_user.h
+++ b/include/s_user.h
@@ -47,7 +47,7 @@ extern int introduce_client(struct Client *client_p, struct Client *source_p,
 			    struct User *user, const char *nick, int use_euid);
 
 extern void change_nick_user_host(struct Client *target_p, const char *nick, const char *user,
-				  const char *host, int newts, char *format, ...);
+				  const char *host, int newts, const char *format, ...);
 
 extern int user_modes[256];
 extern unsigned int find_umode_slot(void);
diff --git a/src/s_user.c b/src/s_user.c
index 30450d8..f8d5e0c 100644
--- a/src/s_user.c
+++ b/src/s_user.c
@@ -1373,7 +1373,7 @@ construct_umodebuf(void)
 
 void
 change_nick_user_host(struct Client *target_p,	const char *nick, const char *user,
-		      const char *host, int newts, char *format, ...)
+		      const char *host, int newts, const char *format, ...)
 {
 	rb_dlink_node *ptr;
 	struct Channel *chptr;