diff --git a/fs/seq_file.c b/fs/seq_file.c
index a1a4cfe..7f40f30c 100644
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -513,7 +513,7 @@
 }
 EXPORT_SYMBOL(seq_bitmap);
 
-int seq_bitmap_list(struct seq_file *m, unsigned long *bits,
+int seq_bitmap_list(struct seq_file *m, const unsigned long *bits,
 		unsigned int nr_bits)
 {
 	if (m->count < m->size) {