diff --git a/stock_vertical_lift_kardex/models/stock_location.py b/stock_vertical_lift_kardex/models/stock_location.py
index cabf25775..c2b6c99c9 100644
--- a/stock_vertical_lift_kardex/models/stock_location.py
+++ b/stock_vertical_lift_kardex/models/stock_location.py
@@ -38,6 +38,7 @@ class StockLocation(models.Model):
                       'Check if the dimensions of tray %s '
                       'are properly set in the tray type.') % (cell_location.display_name, self.name)
                 )
+            x, y = int(x), int(y)
         else:
             x, y = "", ""
         subst = {