diff --git a/src/Directory.build.targets b/src/Directory.build.targets
index 23d86b2f3..b649ce49d 100644
--- a/src/Directory.build.targets
+++ b/src/Directory.build.targets
@@ -53,4 +53,7 @@
   <PropertyGroup Condition="$(TargetFramework.StartsWith('tizen'))">
     <DefineConstants>$(DefineConstants);TIZEN</DefineConstants>
   </PropertyGroup>
+  <PropertyGroup Condition="$(TargetFramework.Equals('net6.0')) or $(TargetFramework.Equals('netstandard2.1')) or $(TargetFramework.Equals('netstandard2.0'))">
+    <DefineConstants>$(DefineConstants);IS_SHARED_NET</DefineConstants>
+  </PropertyGroup>
 </Project>
diff --git a/src/Splat.Drawing/Platforms/ServiceLocationDrawingInitialization.cs b/src/Splat.Drawing/Platforms/ServiceLocationDrawingInitialization.cs
index db17b2780..c0575f387 100644
--- a/src/Splat.Drawing/Platforms/ServiceLocationDrawingInitialization.cs
+++ b/src/Splat.Drawing/Platforms/ServiceLocationDrawingInitialization.cs
@@ -23,7 +23,7 @@ public static void RegisterPlatformBitmapLoader(this IMutableDependencyResolver
                 throw new ArgumentNullException(nameof(resolver));
             }
 
-#if !NETSTANDARD && !NET5_0 && !NET6_0
+#if !IS_SHARED_NET
             // not supported in netstandard2.0 or NET5/6 library
             if (!resolver.HasRegistration(typeof(IBitmapLoader)))
             {