diff --git a/mis_builder/models/kpimatrix.py b/mis_builder/models/kpimatrix.py
index a626a9d..1545285 100644
--- a/mis_builder/models/kpimatrix.py
+++ b/mis_builder/models/kpimatrix.py
@@ -73,7 +73,10 @@ class KpiMatrixRow(object):
     def is_empty(self):
         for cell in self.iter_cells():
             dp = cell and cell.row.kpi.env.user.company_id.currency_id.decimal_places or 6
-            if cell and not float_is_zero(cell.val, dp) and cell.val not in (AccountingNone, None):
+            try:
+                if cell and not float_is_zero(cell.val, dp) and cell.val not in (AccountingNone, None):
+                    return False
+            except Exception:
                 return False
         return True