diff --git a/.github/actions/spell-check/expect.txt b/.github/actions/spell-check/expect.txt
index 68555a02f9..9f2ddfe382 100644
--- a/.github/actions/spell-check/expect.txt
+++ b/.github/actions/spell-check/expect.txt
@@ -1663,6 +1663,7 @@ TDefault
 TDevice
 telephon
 templatenamespace
+TESTONLY
 testprocess
 TEXCOORD
 TEXTBOXNEWLINE
diff --git a/src/modules/Hosts/Hosts.FuzzTests/Hosts.FuzzTests.csproj b/src/modules/Hosts/Hosts.FuzzTests/Hosts.FuzzTests.csproj
index 8c0f107395..667cfcc0ad 100644
--- a/src/modules/Hosts/Hosts.FuzzTests/Hosts.FuzzTests.csproj
+++ b/src/modules/Hosts/Hosts.FuzzTests/Hosts.FuzzTests.csproj
@@ -6,6 +6,7 @@
 	<PropertyGroup>
 		<LangVersion>latest</LangVersion>
 		<ImplicitUsings>enable</ImplicitUsings>
+		<DefineConstants>TESTONLY</DefineConstants>
 	</PropertyGroup>
 	
 	<PropertyGroup>
diff --git a/src/modules/Hosts/HostsUILib/HostsMainPage.xaml b/src/modules/Hosts/HostsUILib/HostsMainPage.xaml
index f00eef9117..762b4264c9 100644
--- a/src/modules/Hosts/HostsUILib/HostsMainPage.xaml
+++ b/src/modules/Hosts/HostsUILib/HostsMainPage.xaml
@@ -611,6 +611,7 @@
         <ContentDialog
             x:Name="EntryDialog"
             x:Uid="EntryDialog"
+            x:DataType="models:Entry"
             IsPrimaryButtonEnabled="{Binding Valid, Mode=OneWay}"
             Loaded="ContentDialog_Loaded_ApplyMargin"
             PrimaryButtonStyle="{StaticResource AccentButtonStyle}">
diff --git a/src/modules/Hosts/HostsUILib/Models/Entry.cs b/src/modules/Hosts/HostsUILib/Models/Entry.cs
index 0c7c47efc1..02b02f6c63 100644
--- a/src/modules/Hosts/HostsUILib/Models/Entry.cs
+++ b/src/modules/Hosts/HostsUILib/Models/Entry.cs
@@ -11,6 +11,9 @@ using HostsUILib.Helpers;
 
 namespace HostsUILib.Models
 {
+#if !TESTONLY
+    [Microsoft.UI.Xaml.Data.Bindable]
+#endif
     public partial class Entry : ObservableObject
     {
         private static readonly char[] _spaceCharacters = new char[] { ' ', '\t' };