diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 82ddbf4..e0193d6 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -347,7 +347,7 @@
 extern void nfs_clear_inode(struct inode *);
 extern void nfs_evict_inode(struct inode *);
 void nfs_zap_acl_cache(struct inode *inode);
-extern int nfs_wait_bit_killable(void *word);
+extern int nfs_wait_bit_killable(struct wait_bit_key *key);
 
 /* super.c */
 extern const struct super_operations nfs_sops;