diff --git a/doc/uImage.FIT/multi.its b/doc/uImage.FIT/multi.its
index b9929623b484f4283c29c89172d670fa6f3996fe..1d8c2dbf90580e095c75a2d56222e4fd201d0ee0 100644
--- a/doc/uImage.FIT/multi.its
+++ b/doc/uImage.FIT/multi.its
@@ -56,6 +56,7 @@
 			data = /incbin/("./eldk-4.2-ramdisk");
 			type = "ramdisk";
 			arch = "ppc";
+			os = "linux";
 			compression = "gzip";
 			hash@1 {
 				algo = "sha1";
@@ -67,6 +68,7 @@
 			data = /incbin/("./eldk-3.1-ramdisk");
 			type = "ramdisk";
 			arch = "ppc";
+			os = "linux";
 			compression = "gzip";
 			hash@1 {
 				algo = "crc32";