diff --git a/cg/cg3700.cpp b/cg/cg3700.cpp
index 9c15dd00c..73362262a 100755
--- a/cg/cg3700.cpp
+++ b/cg/cg3700.cpp
@@ -141,7 +141,7 @@ bool TLista_fatture::filter_func1(const TRelation *r)
   {
     real percind;
     const int tipodet = get_tipodet_from_rmi(riv, mov, percind);
-    if (tipodet == 0 || percind.is_zero())
+    if (riv.get(RMI_TIPODET).blank() || percind.is_zero())
       return false;
   
     const int tiporeg = a.tiporeg(rg);