diff --git a/Ventas/ClientesAbonar.aspx b/Ventas/ClientesAbonar.aspx
index 86a826897..5f0b42e1d 100644
--- a/Ventas/ClientesAbonar.aspx
+++ b/Ventas/ClientesAbonar.aspx
@@ -173,7 +173,7 @@
                             <div class="row">
                                 <label class="col-md-2">Observaciones</label>
                                 <div class="col-md-7">
-                                    <asp:TextBox ID="TxtObservaciones" CssClass="form-control input-sm" runat="server" MaxLength="500" Width="400px" Rows="2" TextMode="MultiLine" ClientIDMode="Static"></asp:TextBox>
+                                    <asp:TextBox ID="TxtObservaciones" CssClass="form-control input-sm" runat="server" MaxLength="750" Width="400px" Rows="2" TextMode="MultiLine" ClientIDMode="Static"></asp:TextBox>
                                     <asp:HiddenField ID="HdnObs" runat="server" ClientIDMode="Static" />
                                 </div>
                                 <div class="col-md-2 input-icon">