diff --git a/test/erl/Makefile.am b/test/erl/Makefile.am
index 911fceb..309d07e 100644
--- a/test/erl/Makefile.am
+++ b/test/erl/Makefile.am
@@ -26,6 +26,7 @@
 	for f in $(THRIFT_FILES) ; do \
 	  $(THRIFT) --gen erl $$f ; \
 	done ; \
+	$(THRIFT) --gen erl:legacynames LegacyNames.thrift
 	touch .generated
 
 check: .generated