diff --git a/fs/ocfs2/ioctl.c b/fs/ocfs2/ioctl.c
index ab30c005cc4b..994726ada857 100644
--- a/fs/ocfs2/ioctl.c
+++ b/fs/ocfs2/ioctl.c
@@ -402,7 +402,7 @@ out_err:
 static void o2ffg_update_histogram(struct ocfs2_info_free_chunk_list *hist,
 				   unsigned int chunksize)
 {
-	int index;
+	u32 index;
 
 	index = __ilog2_u32(chunksize);
 	if (index >= OCFS2_INFO_MAX_HIST)