--- squashfs-tools/mksquashfs.c
+++ squashfs-tools/mksquashfs.c
@@ -42,6 +42,7 @@
 	#include <endian.h>
 #endif
 #include <stdlib.h>
+#include <stdint.h>
 #include <signal.h>
 #include <setjmp.h>
 #include <sys/mman.h>
@@ -1453,7 +1454,7 @@
 				squashfs_type = SQUASHFS_FILE_TYPE;
 				if(!sorted) {
 					result = write_file(inode, filename, buf.st_size, &duplicate_file);
-					INFO("file %s, uncompressed size %lld bytes, %s\n", filename, buf.st_size, duplicate_file ? "DUPLICATE" : "");
+					INFO("file %s, uncompressed size %jd bytes, %s\n", filename, (intmax_t)buf.st_size, duplicate_file ? "DUPLICATE" : "");
 				} else
 					result = get_sorted_inode(inode, &buf);
 				break;