diff --git a/src/Foundation/LinkerSafeAttribute.cs b/src/Foundation/LinkerSafeAttribute.cs
index af6000b756bd..85f449ed5f8d 100644
--- a/src/Foundation/LinkerSafeAttribute.cs
+++ b/src/Foundation/LinkerSafeAttribute.cs
@@ -25,8 +25,10 @@
 using System;
 
 namespace Foundation {
-	
+
+#if NET
 	[Obsolete ("Replace with '[assembly: System.Reflection.AssemblyMetadata (\"IsTrimmable\", \"True\")]'.")]
+#endif
 	[AttributeUsage (AttributeTargets.Assembly)]
 	public sealed class LinkerSafeAttribute : Attribute {
 		
diff --git a/tools/common/Tuning.cs b/tools/common/Tuning.cs
index 71c5fce0262e..0d5c0b34a4c1 100644
--- a/tools/common/Tuning.cs
+++ b/tools/common/Tuning.cs
@@ -127,13 +127,8 @@ protected override bool IsLinkerSafeAttribute (CustomAttribute attribute)
 			case "LinkerSafeAttribute":
 				return true; // namespace is not important
 			case "AssemblyMetadataAttribute":
-				if (!attribute.HasConstructorArguments)
-					return false;
-				if (at.Namespace != "System.Reflection")
-					return false;
-				if (attribute.ConstructorArguments [0].Value as string != "IsTrimmable")
-					return false;
-				return (attribute.ConstructorArguments [1].Value.ToString ().ToLowerInvariant () == "true");
+				// this is only true for net6+ and can depends on other features not available on the legacy linker
+				return false;
 			}
 			return false;
 		}