Manually remove $(BUILT_SOURCES) since no-dist-built-sources doesnt work
diff --git a/test/dart/Makefile.am b/test/dart/Makefile.am
index 81f2f5b..3552668 100644
--- a/test/dart/Makefile.am
+++ b/test/dart/Makefile.am
@@ -48,5 +48,8 @@
 client: stubs
 	${DART} test_client/bin/main.dart
 
+distdir:
+	$(MAKE) $(AM_MAKEFLAGS) distdir-am
+
 EXTRA_DIST = \
 	test_client