diff --git a/Ventas/RepComisionesSMS.aspx b/Ventas/RepComisionesSMS.aspx
index 11a8caf8e..281af3ea6 100644
--- a/Ventas/RepComisionesSMS.aspx
+++ b/Ventas/RepComisionesSMS.aspx
@@ -271,7 +271,7 @@
 
                             <div class="col-md-2">
                                 <div class="form-group form-md-line-input input-iconright">
-                                     <asp:DropDownList ID="DdlModalTipoComision" CssClass="form-control select2me" runat="server"  Width="100%"  OnSelectedIndexChanged="DdlModalTipoComision_SelectedIndexChanged">
+                                     <asp:DropDownList ID="DdlModalTipoComision" CssClass="form-control select2me" runat="server"  Width="100%"  OnSelectedIndexChanged="DdlModalTipoComision_SelectedIndexChanged" AutoPostBack="true">
                                          <asp:ListItem Value="-1"  >Seleccione</asp:ListItem>
                                          <asp:ListItem Value="1" >Fija</asp:ListItem>
                                          <asp:ListItem Value="2">Porcentaje</asp:ListItem>