From 90afedddfdd24a1d5db475ddd61600a81f3d512a Mon Sep 17 00:00:00 2001
From: Romfos <Romfos@tut.by>
Date: Mon, 13 Jul 2026 17:44:06 +0200
Subject: [PATCH] Make Arg.Is not nullable predocate

---
 src/NSubstitute/Arg.cs | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/NSubstitute/Arg.cs b/src/NSubstitute/Arg.cs
index 6d0fc49d..7cfd4000 100644
--- a/src/NSubstitute/Arg.cs
+++ b/src/NSubstitute/Arg.cs
@@ -39,18 +39,18 @@ public static ref T Is<T>(T value)
     /// Match argument that satisfies <paramref name="predicate"/>.
     /// If the <paramref name="predicate"/> throws an exception for an argument it will be treated as non-matching.
     /// </summary>
-    public static ref T Is<T>(Expression<Predicate<T?>> predicate)
+    public static ref T Is<T>(Expression<Predicate<T>> predicate)
     {
-        return ref ArgumentMatcher.Enqueue<T>(new ExpressionArgumentMatcher<T>(predicate));
+        return ref ArgumentMatcher.Enqueue<T>(new ExpressionArgumentMatcher<T>(predicate!));
     }
 
     /// <summary>
     /// Match argument that satisfies <paramref name="predicate"/>.
     /// If the <paramref name="predicate"/> throws an exception for an argument it will be treated as non-matching.
     /// </summary>
-    public static ref T Is<T>(Expression<Predicate<object?>> predicate) where T : AnyType
+    public static ref T Is<T>(Expression<Predicate<object>> predicate) where T : AnyType
     {
-        return ref ArgumentMatcher.Enqueue<T>(new ExpressionArgumentMatcher<object>(predicate));
+        return ref ArgumentMatcher.Enqueue<T>(new ExpressionArgumentMatcher<object>(predicate!));
     }
 
     /// <summary>