diff --git a/tests/conform/Makefile.am b/tests/conform/Makefile.am
index 6865fd014..54b84a0c8 100644
--- a/tests/conform/Makefile.am
+++ b/tests/conform/Makefile.am
@@ -54,7 +54,7 @@ deprecated_tests = \
 	texture \
 	$(NULL)
 
-test_programs = $(actor_tests) $(general_tests) $(deprecated_tests)
+test_programs = $(actor_tests) $(general_tests) $(classes_tests) $(deprecated_tests)
 
 dist_test_data = $(script_ui_files)
 script_ui_files = $(addprefix scripts/,$(script_tests))