diff --git a/rebar.config b/rebar.config
index 7aa7bcc..04f914b 100644
--- a/rebar.config
+++ b/rebar.config
@@ -4,6 +4,8 @@
             {platform_define, "^R", old_rand},
             {platform_define, "^R", no_sync}]}.
 
+{xref_checks, [undefined_function_calls,undefined_functions]}.
+
 {profiles,
  [{eqc, [{deps, [meck, fqc]},
     {erl_opts, [debug_info, {parse_transform, lager_transform}, {parse_transform, eqc_cover}]},