diff --git a/src/rebar_erlc_compiler.erl b/src/rebar_erlc_compiler.erl
index be2b59d..130e993 100644
--- a/src/rebar_erlc_compiler.erl
+++ b/src/rebar_erlc_compiler.erl
@@ -29,6 +29,7 @@
 -export([compile/2,
          clean/2]).
 
+%% internal use only by rebar_eunit
 -export([doterl_compile/2,
          doterl_compile/3]).