diff --git a/fs/nilfs2/alloc.h b/fs/nilfs2/alloc.h
index 9af34a7..f5fde36 100644
--- a/fs/nilfs2/alloc.h
+++ b/fs/nilfs2/alloc.h
@@ -74,7 +74,7 @@
 
 #define nilfs_set_bit_atomic		ext2_set_bit_atomic
 #define nilfs_clear_bit_atomic		ext2_clear_bit_atomic
-#define nilfs_find_next_zero_bit	ext2_find_next_zero_bit
+#define nilfs_find_next_zero_bit	find_next_zero_bit_le
 
 /*
  * persistent object allocator cache