diff --git a/rebar.config b/rebar.config
index 3d8f9e9..4b4d8a8 100644
--- a/rebar.config
+++ b/rebar.config
@@ -22,6 +22,8 @@
 {erl_opts, [
     {lager_extra_sinks, ['__lager_test_sink']},
     {platform_define, "(19|20)", test_statem},
+    {platform_define, "(18)", 'FUNCTION_NAME', unavailable},
+    {platform_define, "(18)", 'FUNCTION_ARITY', 0},
     debug_info,
     report,
     verbose,