diff --git a/Makefile b/Makefile
index e1e394f..30ca940 100644
--- a/Makefile
+++ b/Makefile
@@ -60,6 +60,7 @@
 	@echo 'Usage: $(MAKE) help ...'
 	@echo '  % make clean sterile'
 	@echo '  % make lint lint-jjb'
+	@echo '  % make build           # jjb-gen'
 	@echo '  % make test'
 	@echo '  % make help            # show all available targes'