diff --git a/src/libraries/System.Private.CoreLib/src/System/Threading/LazyInitializer.cs b/src/libraries/System.Private.CoreLib/src/System/Threading/LazyInitializer.cs
index 7b570f05a9557d..b2fddf32f8cfba 100644
--- a/src/libraries/System.Private.CoreLib/src/System/Threading/LazyInitializer.cs
+++ b/src/libraries/System.Private.CoreLib/src/System/Threading/LazyInitializer.cs
@@ -9,6 +9,7 @@
 
 using System.Diagnostics;
 using System.Diagnostics.CodeAnalysis;
+using System.Runtime.CompilerServices;
 
 namespace System.Threading
 {
@@ -111,10 +112,18 @@ public static T EnsureInitialized<T>([NotNull] ref T? target, Func<T> valueFacto
         /// <returns>The initialized variable</returns>
         private static T EnsureInitializedCore<T>([NotNull] ref T? target, Func<T> valueFactory) where T : class
         {
-            T value = valueFactory() ?? throw new InvalidOperationException(SR.Lazy_StaticInit_InvalidOperation);
+            T? value = valueFactory();
+            if (value is null)
+            {
+                Throw();
+            }
+
             Interlocked.CompareExchange(ref target, value, null!);
             Debug.Assert(target != null);
             return target;
+
+            [DoesNotReturn]
+            static void Throw() => throw new InvalidOperationException(SR.Lazy_StaticInit_InvalidOperation);
         }
 
         /// <summary>