diff --git a/bom/Makefile b/bom/Makefile
index 0a2534c..9cca584 100644
--- a/bom/Makefile
+++ b/bom/Makefile
@@ -40,8 +40,13 @@ show-%:		%.ord $(DSC)
 		grep -vw ATRF $< | $(BOOM) prettyord -t - $(DSC) | \
 		  sed 's/^...  //'
 
+%-smt.csv:	%.ord $(DSC)
+		grep -vw ATRF $< | $(BOOM) prettyord -f -c -r - $(DSC) >$@ || \
+		  { rm -f $@; exit 1; }
+
 spotless:
 		$(MAKE) -C dk spotless
 		rm -f atusb.lst atusb.par atusb.ord
 		rm -f atben.lst atben.par atben.ord
+		rm -f atusb-smt.csv atben-smt.csv cntr-smt.csv
 		rm -f cntr.lst cntr.par cntr.ord