diff --git a/sys/src/9/imx8/mkfile b/sys/src/9/imx8/mkfile
index 01f8adad6..10d50f06b 100644
--- a/sys/src/9/imx8/mkfile
+++ b/sys/src/9/imx8/mkfile
@@ -80,7 +80,7 @@ $OBJ: $HFILES
 
 install:V: /$objtype/$p$CONF
 
-/$objtype/$p$CONF:D: $p$CONF s$p$CONF
+/$objtype/$p$CONF:D: $p$CONF $p$CONF.u
 	cp -x $p$CONF $p$CONF.u /$objtype/
 
 <../boot/bootmkfile