diff --git a/Ventas/PV.aspx b/Ventas/PV.aspx
index 71004d7e2..239c1c1d6 100644
--- a/Ventas/PV.aspx
+++ b/Ventas/PV.aspx
@@ -3017,7 +3017,7 @@
                 return;
             //AUTOMOTRIZ-ACUMULADORES
             } else {
-                let regex = new RegExp("^[1X]|^[0-9][A-HJ-M]([[0-2][0-9]|3[0-1])[0-9A-Z][ACEN][2-5]$");
+                let regex = new RegExp("^[1X]|^[0-9][A-HJ-M][0-3][0-9][A-Z][ACEN][2-5]$");
                 arguments.IsValid = regex.test(arguments.Value);
                 return;
             }