diff --git a/moo/lib/comp.c b/moo/lib/comp.c
index 5885cee..9e08487 100644
--- a/moo/lib/comp.c
+++ b/moo/lib/comp.c
@@ -6604,8 +6604,7 @@ static int add_compiled_method (moo_t* moo)
 		preamble_index = 0;
 	}
 
-	/*if (cc->mth.variadic) */
-	preamble_flags |= cc->mth.variadic;
+	preamble_flags |= cc->mth.variadic; /* MOO_METHOD_PREAMBLE_FLAG_VARIADIC or MOO_METHOD_PREAMBLE_FLAG_LIBERAL */
 	if (cc->mth.type == MOO_METHOD_DUAL) preamble_flags |= MOO_METHOD_PREAMBLE_FLAG_DUAL;
 	if (cc->mth.lenient) preamble_flags |= MOO_METHOD_PREAMBLE_FLAG_LENIENT;
 
@@ -8126,8 +8125,9 @@ static int add_method_signature (moo_t* moo)
 	moo_cunit_interface_t* ifce = (moo_cunit_interface_t*)moo->c->cunit;
 	moo_oop_char_t name; /* selector */
 	moo_oop_methsig_t mth; /* method signature */
+	moo_ooi_t preamble_flags = 0;
 	moo_oow_t tmp_count = 0;
-	
+
 	name = (moo_oop_char_t)moo_makesymbol(moo, ifce->mth.name.ptr, ifce->mth.name.len);
 	if (!name) goto oops;
 	moo_pushtmp (moo, (moo_oop_t*)&name); tmp_count++;
@@ -8139,12 +8139,11 @@ static int add_method_signature (moo_t* moo)
 	mth->owner = ifce->self_oop;
 	mth->name = name;
 
-/*
-ifce->mth.variadic?
-ifce->mth.lenient?
-ifce->meth.type == DUAL? CLASS? INST?
-*/
-	mth->modifiers = MOO_SMOOI_TO_OOP(0);
+	preamble_flags |= ifce->mth.variadic; /* MOO_METHOD_PREAMBLE_FLAG_VARIADIC or MOO_METHOD_PREAMBLE_FLAG_LIBERAL */
+	if (ifce->mth.lenient) preamble_flags |= MOO_METHOD_PREAMBLE_FLAG_LENIENT;
+	if (ifce->mth.type == MOO_METHOD_DUAL) preamble_flags |= MOO_METHOD_PREAMBLE_FLAG_DUAL;
+
+	mth->preamble = MOO_SMOOI_TO_OOP(MOO_METHOD_MAKE_PREAMBLE(0,0,preamble_flags));
 	mth->tmpr_nargs = MOO_SMOOI_TO_OOP(ifce->mth.tmpr_nargs);
 
 	if (ifce->mth.type == MOO_METHOD_DUAL)
diff --git a/moo/lib/moo.c b/moo/lib/moo.c
index 2ddaeb4..14f88b1 100644
--- a/moo/lib/moo.c
+++ b/moo/lib/moo.c
@@ -872,8 +872,6 @@ int moo_genpfmethod (moo_t* moo, moo_mod_t* mod, moo_oop_class_t _class, moo_met
 	mth->name = mnsym;
 	if (variadic) preamble_flags |= MOO_METHOD_PREAMBLE_FLAG_VARIADIC;
 	mth->preamble = MOO_SMOOI_TO_OOP(MOO_METHOD_MAKE_PREAMBLE(MOO_METHOD_PREAMBLE_NAMED_PRIMITIVE, 0, preamble_flags));
-	/*mth->preamble_data[0] = MOO_SMOOI_TO_OOP(0);
-	mth->preamble_data[1] = MOO_SMOOI_TO_OOP(0);*/
 	mth->preamble_data[0] = MOO_SMPTR_TO_OOP(0);
 	mth->preamble_data[1] = MOO_SMPTR_TO_OOP(0);
 	mth->tmpr_count = MOO_SMOOI_TO_OOP(arg_count);
diff --git a/moo/lib/moo.h b/moo/lib/moo.h
index bf2bc7d..8b8ad56 100644
--- a/moo/lib/moo.h
+++ b/moo/lib/moo.h
@@ -606,7 +606,7 @@ struct moo_methsig_t
 
 	moo_oop_interface_t owner; /* Interface */
 	moo_oop_char_t  name; /* Symbol, method name */
-	moo_oop_t       modifiers; /* SmallInteger, modifiers specified */
+	moo_oop_t       preamble; /* SmallInteger, includes only preamble flags based on modifiers specified */
 	moo_oop_t       tmpr_nargs; /* SmallInteger */
 };