diff --git a/cg/cg4301.cpp b/cg/cg4301.cpp
index 377b267c0..744b05c28 100755
--- a/cg/cg4301.cpp
+++ b/cg/cg4301.cpp
@@ -169,7 +169,7 @@ bool TLiquidazione_app::update_firm(int month, bool recalc)
     if (is_in_liq_period(inatt)) _isdifferita = FALSE;
     if (inatt.year() == atoi(_year)) _monthinatt = inatt.month();
     TConfig cnf1(CONFIG_STUDIO, "cg");
-    _isricacq = cnf1.get_bool("RicAcq");
+    _isricacq = cnf1.get_bool("RicAcq") && month == 13;
   }
   // ricalcolo normale  
   // lim c'e' solo per i trimestri