diff --git a/bindings/engine.i b/bindings/engine.i
index bdc9057f37..a8fe5827d2 100644
--- a/bindings/engine.i
+++ b/bindings/engine.i
@@ -67,6 +67,7 @@ GLIST_HELPER_INOUT(TransList, SWIGTYPE_p_Transaction);
 GLIST_HELPER_INOUT(LotList, SWIGTYPE_p_GNCLot);
 GLIST_HELPER_INOUT(AccountList, SWIGTYPE_p_Account);
 GLIST_HELPER_INOUT(PriceList, SWIGTYPE_p_GNCPrice);
+// TODO: free PriceList?
 GLIST_HELPER_INOUT(CommodityList, SWIGTYPE_p_gnc_commodity);
 
 %typemap(newfree) gchar * "g_free($1);"
@@ -102,13 +103,6 @@ static const GncGUID * gncBudgetGetGUID(GncBudget *x)
 { return qof_instance_get_guid(QOF_INSTANCE(x)); }
 %}
 
-%typemap (freearg) AccountList * "g_list_free ($1);"
-%typemap (freearg) PriceList * "g_list_free ($1);"
-%typemap (freearg) SplitList * "g_list_free ($1);"
-%typemap (freearg) TransList * "g_list_free ($1);"
-%typemap (freearg) LotList * "g_list_free ($1);"
-%typemap (freearg) CommodityList * "g_list_free ($1);"
-
 /* NB: The object ownership annotations should already cover all the
 functions currently used in guile, but not all the functions that are
 wrapped.  So, we should contract the interface to wrap only the used