From eb4b027266749c43bd6b1c14efcf47387dc588f9 Mon Sep 17 00:00:00 2001
From: Youssef Fahmy <youssefvictor00@gmail.com>
Date: Fri, 1 May 2026 10:55:39 +0200
Subject: [PATCH 1/2] Fix nullability annotation of InnerMock

---
 src/Moq/ISetup.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Moq/ISetup.cs b/src/Moq/ISetup.cs
index 03255edba..1e493760c 100644
--- a/src/Moq/ISetup.cs
+++ b/src/Moq/ISetup.cs
@@ -49,7 +49,7 @@ public interface ISetup
         // /// <exception cref="InvalidOperationException">The setup has more than one inner mock.</exception>
         // [Obsolete("Use 'InnerMocks' instead.")]
         // [EditorBrowsable(EditorBrowsableState.Never)]
-        Mock InnerMock { get; }
+        Mock? InnerMock { get; }
 
         // /// <summary>
         // ///   Gets the inner mocks of this setup (if present and known).

From d551240b1293a268dbbcfd9c6094c80a3d0df224 Mon Sep 17 00:00:00 2001
From: Youssef Fahmy <youssefvictor00@gmail.com>
Date: Fri, 1 May 2026 10:56:11 +0200
Subject: [PATCH 2/2] Fix in concrete impl

---
 src/Moq/Setup.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Moq/Setup.cs b/src/Moq/Setup.cs
index be6f754db..f9030b851 100644
--- a/src/Moq/Setup.cs
+++ b/src/Moq/Setup.cs
@@ -35,7 +35,7 @@ protected Setup(Expression originalExpression, Mock mock, Expectation expectatio
 
         public LambdaExpression Expression => this.expectation.Expression;
 
-        Mock ISetup.InnerMock => this.InnerMocks.SingleOrDefault();
+        Mock? ISetup.InnerMock => this.InnerMocks.SingleOrDefault();
 
         public virtual IEnumerable<Mock> InnerMocks => Enumerable.Empty<Mock>();