diff --git a/MainWindow.xaml.cs b/MainWindow.xaml.cs
index 7458512..8cb2693 100644
--- a/MainWindow.xaml.cs
+++ b/MainWindow.xaml.cs
@@ -15,6 +15,7 @@ namespace Hermes {
         private CitoyenModal citoyenModal = new CitoyenModal();
         private PreferencesModal preferencesModal = new PreferencesModal();
         private CollectionViewSource citoyenCollectionViewSource = null;
+        private bool isEnabledFilter = false;
 
         public MainWindow() {
             dbContext = ModelContext.Getinstance();
@@ -69,13 +70,19 @@ namespace Hermes {
         }
 
         private void Rechercher_Click(object sender, RoutedEventArgs e) {
-            citoyenCollectionViewSource.Filter += new FilterEventHandler(CitoyenFilter);
-            //citoyenCollectionViewSource.View.Refresh();
+            if(isEnabledFilter) {
+                citoyenCollectionViewSource.View.Refresh();
+            } else {
+                citoyenCollectionViewSource.Filter += new FilterEventHandler(CitoyenFilter);
+                isEnabledFilter = true;
+            }
         }
 
         private void Reinitialiser_Click(object sender, RoutedEventArgs e) {
-            citoyenCollectionViewSource.Filter -= new FilterEventHandler(CitoyenFilter);
-            //citoyenCollectionViewSource.View.Refresh();
+            if(isEnabledFilter) {
+                citoyenCollectionViewSource.Filter -= new FilterEventHandler(CitoyenFilter);
+                isEnabledFilter = false;
+            }
         }
 
         protected override void OnClosed(EventArgs e) {