diff --git a/fs/proc/base.c b/fs/proc/base.c
index d8b5a1653444..e9e7652b77da 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -393,7 +393,7 @@ static int proc_pid_wchan(struct seq_file *m, struct pid_namespace *ns,
 
 	wchan = get_wchan(task);
 	if (wchan && !lookup_symbol_name(wchan, symname)) {
-		seq_printf(m, "%s", symname);
+		seq_puts(m, symname);
 		return 0;
 	}