diff --git a/source/app/controllers/util.py b/source/app/controllers/util.py
index 02e9979..c8421e1 100644
--- a/source/app/controllers/util.py
+++ b/source/app/controllers/util.py
@@ -811,6 +811,9 @@ class LIBO(object):
                 col5.append((float(valor_unitario),))
                 col6.append((float(importe),))
 
+        if not count:
+            return
+
         col = cell_1.getCellAddress().Column
         target1 = self._sheet.getCellRangeByPosition(col, row+1, col, row+count)
         col = cell_2.getCellAddress().Column