diff --git a/src/App.axaml.cs b/src/App.axaml.cs
index 3a7470dc1..00989dd81 100644
--- a/src/App.axaml.cs
+++ b/src/App.axaml.cs
@@ -257,6 +257,12 @@ public override void OnFrameworkInitializationCompleted()
                         e.Cancel = true;
                 });
 
+#if DEV_BUILD
+                var devIcon = new WindowIcon(
+                    Avalonia.Platform.AssetLoader.Open(new Uri("avares://SourceGit/AppDev.ico")));
+                Window.WindowOpenedEvent.AddClassHandler<Window>((w, _) => w.Icon = devIcon);
+#endif
+
                 if (TryLaunchAsFileHistoryViewer(desktop))
                     return;
 
diff --git a/src/AppDev.ico b/src/AppDev.ico
new file mode 100644
index 000000000..2b9865653
Binary files /dev/null and b/src/AppDev.ico differ
diff --git a/src/SourceGit.csproj b/src/SourceGit.csproj
index fc8fe02d1..e42a1f280 100644
--- a/src/SourceGit.csproj
+++ b/src/SourceGit.csproj
@@ -3,7 +3,6 @@
     <OutputType>WinExe</OutputType>
     <TargetFramework>net10.0</TargetFramework>
     <ApplicationManifest>App.manifest</ApplicationManifest>
-    <ApplicationIcon>App.ico</ApplicationIcon>
     <Version>$([System.IO.File]::ReadAllText("$(MSBuildProjectDirectory)\\..\\VERSION"))</Version>
     <AvaloniaUseCompiledBindingsByDefault>true</AvaloniaUseCompiledBindingsByDefault>
     <SuppressTrimAnalysisWarnings>true</SuppressTrimAnalysisWarnings>
@@ -19,6 +18,14 @@
     <RepositoryType>Public</RepositoryType>
   </PropertyGroup>
 
+  <PropertyGroup Condition="'$(Configuration)' == 'Release'">
+    <ApplicationIcon>App.ico</ApplicationIcon>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)' != 'Release'">
+    <ApplicationIcon>AppDev.ico</ApplicationIcon>
+    <DefineConstants>$(DefineConstants);DEV_BUILD</DefineConstants>
+  </PropertyGroup>
+
   <PropertyGroup Condition="'$(Configuration)' == 'Release' and '$(DisableAOT)' != 'true'">
     <PublishAot>true</PublishAot>
     <PublishTrimmed>true</PublishTrimmed>
@@ -39,6 +46,7 @@
 
   <ItemGroup>
     <AvaloniaResource Include="App.ico" />
+    <AvaloniaResource Include="AppDev.ico" />
     <AvaloniaResource Include="Resources/Fonts/*" />
     <AvaloniaResource Include="Resources/Grammars/*" />
     <AvaloniaResource Include="Resources/Images/*" />
@@ -71,11 +79,11 @@
 
   <Target BeforeTargets="GetAssemblyAttributes" Name="GenVersionInfo">
     <Exec Command="git describe --abbrev=8 --dirty" ConsoleToMsBuild="True" IgnoreExitCode="true">
-      <Output PropertyName="FriendlyVersion" TaskParameter="ConsoleOutput"/>
+      <Output PropertyName="FriendlyVersion" TaskParameter="ConsoleOutput" />
     </Exec>
 
     <ItemGroup>
-      <AssemblyMetadata Include="FriendlyVersion" Value="$([System.String]::Copy('$(FriendlyVersion)').Replace('g', '').Trim())"/>
+      <AssemblyMetadata Include="FriendlyVersion" Value="$([System.String]::Copy('$(FriendlyVersion)').Replace('g', '').Trim())" />
     </ItemGroup>
   </Target>
 </Project>