diff --git a/Yavsc/Helpers/TeXHelpers.cs b/Yavsc/Helpers/TeXHelpers.cs
index 70633c2c..e3c77559 100644
--- a/Yavsc/Helpers/TeXHelpers.cs
+++ b/Yavsc/Helpers/TeXHelpers.cs
@@ -11,7 +11,7 @@ using Yavsc.ViewModels.Gen;
 
 namespace Yavsc.Helpers
 {
-    public class TeXString
+    public class TeXString : HtmlString
     {
 
         public class Replacement
@@ -54,28 +54,24 @@ namespace Yavsc.Helpers
             new Replacement("†","\\dag"),
             new Replacement("–","\\textendash")
         };
-        string data;
-        public TeXString(string str)
+        
+        public TeXString(string str) : base(TR(str))
         {
-            data = str;
+           
+            
+        }
+        private static string TR(string source)
+        {
+            string result=source;
             foreach (var r in SpecialCharsRendering)
             {
-                data = r.Execute(data);
+                result = r.Execute(result);
             }
+            return result;
         }
 
-        override public string ToString()
-        {
-            return data;
-        }
-        public HtmlString ToHtmlString()
-        {
-            return new HtmlString(ToString());
-        }
-
-
-
     }
+
     public static class TeXHelpers
     {
         public static string NewLinesWith(this string target, string separator)
diff --git a/Yavsc/Views/Shared/Components/Estimate/Estimate_tex.cshtml b/Yavsc/Views/Shared/Components/Estimate/Estimate_tex.cshtml
index 297f516f..4db29109 100644
--- a/Yavsc/Views/Shared/Components/Estimate/Estimate_tex.cshtml
+++ b/Yavsc/Views/Shared/Components/Estimate/Estimate_tex.cshtml
@@ -68,7 +68,7 @@
 \def\FactureNum            {@Model.Id.ToString()}    % Numéro de facture
 \def\FactureAcquittee    {@ViewBag.Acquitted?"oui":"non"}        % Facture acquittée : oui/non
 \def\FactureLieu    {@proaddrm}    % Lieu de l'édition de la facture
-\def\FactureObjet    {@(new HtmlString(isestimate?"Devis":"Facture")) @TeXHelpers.ToTeX(Model.Title)}    % Objet du document
+\def\FactureObjet    {@(new HtmlString(isestimate?"Devis":"Facture")) : @TeXHelpers.ToTeX(Model.Title)}    % Objet du document
 % Description de la facture
 \def\FactureDescr    {
    @TeXHelpers.ToTeX(Model.Description)
@@ -192,7 +192,7 @@
     <text>
 \begin{flushright}
   @(new HtmlString(isestimate?"Devis validé":"Facture validée")) le @TeXHelpers.ToTeX(Model.ProviderValidationDate.ToString("dddd dd MMMM yyyy",
-                  CultureInfo.CreateSpecificCulture("fr-FR"))).ToHtmlString()
+                  CultureInfo.CreateSpecificCulture("fr-FR")))
 \end{flushright}
 @if (prosign.Exists) {
 <text>