diff --git a/sys/cam/cam_periph.c b/sys/cam/cam_periph.c
--- a/sys/cam/cam_periph.c
+++ b/sys/cam/cam_periph.c
@@ -582,7 +582,8 @@
 
 			if (newunit != dunit)
 				continue;
-			if (resource_int_value(dname, dunit, "target", &val) == 0 ||
+			if (resource_int_value(dname, dunit, "lun", &val) == 0 ||
+			    resource_int_value(dname, dunit, "target", &val) == 0 ||
 			    resource_string_value(dname, dunit, "at", &strval) == 0)
 				break;
 		}