diff --git a/src/ps/ps0713800.cpp b/src/ps/ps0713800.cpp
index ad110dfc8..3eaae4135 100644
--- a/src/ps/ps0713800.cpp
+++ b/src/ps/ps0713800.cpp
@@ -12,6 +12,15 @@
 
 #include "ps0713800a.h"
 
+
+/* Utility */
+
+bool regSpec(TString codcaus)
+{
+	return cache().get(LF_CAUSALI, codcaus, "REGSPIVA") != "X";
+}
+
+
 ///////////////////////////////////
 ////    TEsportaIva_msk        ////
 ///////////////////////////////////
@@ -311,7 +320,7 @@ void TEsportaIva_msk::fill()
     if (!pi.add_status())
       break;
 
-		if(get_bool(B_SOLRITFIS) && rmoviva.get("23.RITFIS").as_real() <= ZERO) continue;
+		if(get_bool(B_SOLRITFIS) && rmoviva.get("23.RITFIS").as_real() <= ZERO && !regSpec(rmoviva.get("23.CODCAUS").as_string())) continue;
 
 		TCursor* i = rmoviva.cursor();
 		int k = i->pos();
@@ -534,7 +543,7 @@ void TEsportaIva_app::esporta_righe_iva(const TEsportaIva_msk& m) const
 		if (!pi.add_status())
 		 break;
 
-		if(m.get_bool(B_SOLRITFIS) && rmoviva.get("23.RITFIS").as_real() <= ZERO) continue;
+		if(m.get_bool(B_SOLRITFIS) && rmoviva.get("23.RITFIS").as_real() <= ZERO && !regSpec(rmoviva.get("23.CODCAUS").as_string())) continue;
 
 		TDate last_data_pag;
 		const long  numreg = rmoviva.get(RMI_NUMREG).as_int();