diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index 1481cae7d99ad0b882f27b610bb7326c3c4d41c8..849aac115460812ff419898c45346b353da9bb5c 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -182,7 +182,7 @@ fill_write_buffer(struct sysfs_buffer * buffer, const char __user * buf, size_t
 		return -ENOMEM;
 
 	if (count >= PAGE_SIZE)
-		count = PAGE_SIZE - 1;
+		count = PAGE_SIZE;
 	error = copy_from_user(buffer->page,buf,count);
 	buffer->needs_read_fill = 1;
 	return error ? -EFAULT : count;