diff -urN a/src/jiffy/rebar.config.script b/src/jiffy/rebar.config.script
--- a/src/jiffy/rebar.config.script	2021-10-05 09:07:14.000000000 -0600
+++ b/src/jiffy/rebar.config.script	2022-05-28 11:59:13.368276228 -0600
@@ -28,7 +28,7 @@
         case os:cmd(FLTO_CHECK) of
             [] ->
                 {port_env, PortEnv} = lists:keyfind(port_env, 1, Config1),
-                NewFlag = {".*", "FLTO_FLAG", "-flto"},
+                NewFlag = {".*", "FLTO_FLAG", ""},
                 NewPortEnv = lists:keyreplace("FLTO_FLAG", 2, PortEnv, NewFlag),
                 lists:keyreplace(port_env, 1, Config1, {port_env, NewPortEnv});
             _ ->