diff --git a/lib/erl/Makefile.am b/lib/erl/Makefile.am
index 2502d31..92e2204 100644
--- a/lib/erl/Makefile.am
+++ b/lib/erl/Makefile.am
@@ -19,6 +19,7 @@
 
 THRIFT = ../../compiler/cpp/thrift
 THRIFT_FILES = $(wildcard test/*.thrift) \
+		  ../../test/ConstantsDemo.thrift \
 		  ../../test/NameConflictTest.thrift \
 		  ../../test/ThriftTest.thrift