diff --git a/rebar.config b/rebar.config
index 8461f3a..fa1850a 100644
--- a/rebar.config
+++ b/rebar.config
@@ -1,4 +1,3 @@
-{erl_first_files, ["src/getopt.erl"]}.
 {erl_opts, [warn_unused_vars,
             warn_export_all,
             warn_shadow_vars,
@@ -14,4 +13,4 @@
             warn_missing_spec,
             warn_untyped_record, debug_info]}.
 {dialyzer_opts, [{warnings, [unmatched_returns, error_handling, race_conditions, behaviours]}]}.
-{xref_checks, [undefined_function_calls]}.
\ No newline at end of file
+{xref_checks, [undefined_function_calls]}.