diff --git a/Sources/Stim/Create.xaml b/Sources/Stim/Create.xaml
index d460c5a..03739e1 100644
--- a/Sources/Stim/Create.xaml
+++ b/Sources/Stim/Create.xaml
@@ -27,7 +27,7 @@
                     <RowDefinition Height="auto"/>
                     <RowDefinition Height="auto"/>
                 </Grid.RowDefinitions>
-                <Image Source="no_cover.png" HeightRequest="490" Margin="0,10,0,0"/>
+                <Image Source="logo_stim.png" HeightRequest="490" Margin="0,10,0,0"/>
                 <Grid Grid.Row="1">
                     <Grid.RowDefinitions>
                         <RowDefinition Height="auto"/>
diff --git a/Sources/Stim/LoginPage.xaml b/Sources/Stim/LoginPage.xaml
index 6c5eb44..6f5b96b 100644
--- a/Sources/Stim/LoginPage.xaml
+++ b/Sources/Stim/LoginPage.xaml
@@ -10,7 +10,7 @@
             <VerticalStackLayout Style="{StaticResource pageBorder}" Grid.Column="0" Grid.Row="1"/>
             <VerticalStackLayout Style="{StaticResource pageBorder}" Grid.Column="2" Grid.Row="1"/>
             <Grid Grid.Column="1" RowDefinitions="500, auto, auto">
-                <Image Source="no_cover.png" HeightRequest="490" Margin="0,10,0,0"/>
+                <Image Source="logo_stim.png" HeightRequest="490" Margin="0,10,0,0"/>
                 <Grid Grid.Row="1" RowDefinitions="auto, auto, auto">
                     <Entry Placeholder="Username" PlaceholderColor="{StaticResource Primary}"
                             IsPassword="False"
diff --git a/Sources/Stim/ProfilPage.xaml.cs b/Sources/Stim/ProfilPage.xaml.cs
index f66916c..0c6601f 100644
--- a/Sources/Stim/ProfilPage.xaml.cs
+++ b/Sources/Stim/ProfilPage.xaml.cs
@@ -23,7 +23,28 @@ public partial class ProfilPage : ContentPage
     {
         var newName = await this.ShowPopupAsync(new EntryPopup("Username"));
         if (string.IsNullOrWhiteSpace(newName as string)) await this.ShowPopupAsync(new MessagePopup("Nom d'utilisateur invalide"));
-        else ((App)App.Current).Manager.CurrentUser.Username = (newName as string);
+        else
+        {
+            if (((App)App.Current).Manager.SearchUser(newName as string) is User)
+            {
+                await this.ShowPopupAsync(new MessagePopup("Nom d'utilisateur déjà utilisé"));
+            }
+            else
+            {
+                string oldName = ((App)App.Current).Manager.CurrentUser.Username;
+                ((App)App.Current).Manager.CurrentUser.Username = (newName as string);
+                foreach (Game g in ((App)App.Current).Manager.GameList)
+                {
+                    foreach(Review r in g.Reviews)
+                    {
+                        if (r.AuthorName==oldName as string)
+                        {
+                            r.AuthorName= newName as string;
+                        }
+                    }
+                }
+            }
+        }
     }
     public async void PopUpBio(object sender, EventArgs e)
     {
diff --git a/Sources/Stim/Resources/Images/logo_stim.png b/Sources/Stim/Resources/Images/logo_stim.png
new file mode 100644
index 0000000..e79a8ca
Binary files /dev/null and b/Sources/Stim/Resources/Images/logo_stim.png differ
diff --git a/Sources/Stim/Stim.csproj b/Sources/Stim/Stim.csproj
index cca602f..aa9a048 100644
--- a/Sources/Stim/Stim.csproj
+++ b/Sources/Stim/Stim.csproj
@@ -50,6 +50,10 @@
 		<MauiAsset Include="Resources\Raw\**" LogicalName="%(RecursiveDir)%(Filename)%(Extension)" />
 	</ItemGroup>
 
+	<ItemGroup>
+	  <None Remove="Resources\Images\logo_stim.png" />
+	</ItemGroup>
+
 	<ItemGroup>
 	  <PackageReference Include="CommunityToolkit.Maui" Version="5.2.0" />
 	  <PackageReference Include="MailKit" Version="4.0.0" />