diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -72,6 +72,7 @@
 	rm -rf build mercurial/locale
 	$(MAKE) -C doc clean
 	$(MAKE) -C contrib/chg distclean
+	if test -d rust/target; then rm -rf rust/target; fi
 
 clean: cleanbutpackages
 	rm -rf packages