diff --git a/source/app/models/main.py b/source/app/models/main.py
index 79f0de0..0f2daca 100644
--- a/source/app/models/main.py
+++ b/source/app/models/main.py
@@ -5369,7 +5369,13 @@ class FacturasPagos(BaseModel):
             fac = Facturas.get(Facturas.id==int(i))
             this_pay = values['this_pay']
             importe = values['importe']
-            type_change = round(this_pay / importe, 6)
+            type_change = round(1 / values['type_change'], 6)
+
+            validate = round(this_pay / type_change, 2)
+            while validate > importe:
+                type_change += 0.000001
+                validate = round(this_pay / type_change, 2)
+
             mov_ant, numero = cls._movimiento_anterior(cls, mov, fac)
             nuevo = {
                 'movimiento': mov,