diff --git a/src/Makefile_Eolian_Cxx.am b/src/Makefile_Eolian_Cxx.am
index f17c00d7bf..8ae97279af 100644
--- a/src/Makefile_Eolian_Cxx.am
+++ b/src/Makefile_Eolian_Cxx.am
@@ -99,6 +99,7 @@ tests/eolian_cxx/eolian_cxx_test_documentation.cc \
 tests/eolian_cxx/eolian_cxx_test_cyclic.cc \
 tests/eolian_cxx/complex.c \
 tests/eolian_cxx/complex_cxx.cc \
+tests/eolian_cxx/beta_class.eo \
 tests/eolian_cxx/eolian_cxx_suite.h
 
 if HAVE_AM_16