diff --git a/src/coreclr/src/System.Private.CoreLib/src/System/Runtime/CompilerServices/RuntimeHelpers.CoreCLR.cs b/src/coreclr/src/System.Private.CoreLib/src/System/Runtime/CompilerServices/RuntimeHelpers.CoreCLR.cs
index 6e481844c8b63..7e3a11ac3414a 100644
--- a/src/coreclr/src/System.Private.CoreLib/src/System/Runtime/CompilerServices/RuntimeHelpers.CoreCLR.cs
+++ b/src/coreclr/src/System.Private.CoreLib/src/System/Runtime/CompilerServices/RuntimeHelpers.CoreCLR.cs
@@ -136,7 +136,9 @@ public static int OffsetToStringData
         [MethodImpl(MethodImplOptions.InternalCall)]
         public static extern bool TryEnsureSufficientExecutionStack();
 
-        private static unsafe object GetUninitializedObjectInternal(Type type)
+        private static unsafe object GetUninitializedObjectInternal(
+            [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors | DynamicallyAccessedMemberTypes.NonPublicConstructors)]
+            Type type)
         {
             RuntimeType rt = (RuntimeType)type;
             Debug.Assert(rt != null);
diff --git a/src/coreclr/src/System.Private.CoreLib/src/System/RuntimeType.CoreCLR.cs b/src/coreclr/src/System.Private.CoreLib/src/System/RuntimeType.CoreCLR.cs
index 05d97361c89ca..9c8fd22edbe12 100644
--- a/src/coreclr/src/System.Private.CoreLib/src/System/RuntimeType.CoreCLR.cs
+++ b/src/coreclr/src/System.Private.CoreLib/src/System/RuntimeType.CoreCLR.cs
@@ -3999,6 +3999,7 @@ private void Initialize(RuntimeType type)
                 delegate*<MethodTable*, object?> pfnNewobj = RuntimeTypeHandle.GetNewobjHelperFnPtr(type, out _pMT, unwrapNullable: false, allowCom: true);
                 if (_pMT->IsNullable)
                 {
+                    static object? GetNull(MethodTable* pMT) => null;
                     pfnNewobj = &GetNull; // Activator.CreateInstance(typeof(Nullable<T>)) => null
                 }
 
@@ -4014,8 +4015,6 @@ public void EnsureInitialized(RuntimeType type)
                     Initialize(type);
                 }
             }
-
-            private static object? GetNull(MethodTable* pMT) => null;
         }
 
         /// <summary>