diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h
index 4b1d825..f103bac 100644
--- a/fs/sysfs/sysfs.h
+++ b/fs/sysfs/sysfs.h
@@ -212,6 +212,7 @@
  * file.c
  */
 extern const struct file_operations sysfs_file_operations;
+extern const struct file_operations sysfs_bin_operations;
 
 int sysfs_add_file(struct sysfs_dirent *dir_sd,
 		   const struct attribute *attr, int type);