diff --git a/iscsi-scst/usr/message.c b/iscsi-scst/usr/message.c
index 74a10549d..4e41acfeb 100644
--- a/iscsi-scst/usr/message.c
+++ b/iscsi-scst/usr/message.c
@@ -16,6 +16,7 @@
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 
 #include <sys/socket.h>
diff --git a/usr/fileio/common.h b/usr/fileio/common.h
index ba76fbdaa..cf7b89dda 100644
--- a/usr/fileio/common.h
+++ b/usr/fileio/common.h
@@ -61,7 +61,7 @@ struct vdisk_dev {
 	uint32_t block_size;
 	uint64_t nblocks;
 	int block_shift;
-	loff_t file_size;	/* in bytes */
+	int64_t file_size;	/* in bytes */
 	void *(*alloc_fn)(size_t size);
 
 	pthread_mutex_t dev_mutex;