diff --git a/src/rebar_compiler_erl.erl b/src/rebar_compiler_erl.erl
index a39e9067..95f3a175 100644
--- a/src/rebar_compiler_erl.erl
+++ b/src/rebar_compiler_erl.erl
@@ -255,7 +255,7 @@ parse_attrs(Fd, Includes, Dir) ->
                     parse_attrs(Fd, Includes, Dir)
             end;
         {eof, _} ->
-            Includes;
+            lists:usort(Includes);
         _Err ->
             parse_attrs(Fd, Includes, Dir)
     end.