diff --git a/src/fp/fplib01.cpp b/src/fp/fplib01.cpp
index 169ed15b4..21a036a2f 100644
--- a/src/fp/fplib01.cpp
+++ b/src/fp/fplib01.cpp
@@ -2258,7 +2258,7 @@ bool TDoc_fp::doc_to_paf(TDocumentoEsteso& doc)
 			else
 			{
 				const real          imp = rdoc->imponibile(false);
-				real                qta = UNO;
+				real                qta = rdoc->quantita();
 //				bool qta_inverse = false;
 				real prz = imp;