diff --git a/src/Paramore.Fences.Core/Simmy/Fault/FaultGenerator.cs b/src/Paramore.Fences.Core/Simmy/Fault/FaultGenerator.cs
index c7686900..5901f8f1 100644
--- a/src/Paramore.Fences.Core/Simmy/Fault/FaultGenerator.cs
+++ b/src/Paramore.Fences.Core/Simmy/Fault/FaultGenerator.cs
@@ -78,6 +78,6 @@ public FaultGenerator AddException<TException>(int weight = DefaultWeight)
 
         var generatorDelegate = generator._helper.CreateGenerator();
 
-        return args => new ValueTask<Exception?>(generatorDelegate(args.Context)!.Value.Exception);
+        return args => new ValueTask<Exception?>(generatorDelegate(args.Context)?.Exception);
     }
 }
diff --git a/test/Paramore.Fences.Core.Tests/Simmy/Fault/FaultGeneratorTests.cs b/test/Paramore.Fences.Core.Tests/Simmy/Fault/FaultGeneratorTests.cs
index ba98c44b..c9e8b852 100644
--- a/test/Paramore.Fences.Core.Tests/Simmy/Fault/FaultGeneratorTests.cs
+++ b/test/Paramore.Fences.Core.Tests/Simmy/Fault/FaultGeneratorTests.cs
@@ -39,6 +39,33 @@ public void AddException_FactoryWithResilienceContext_Ok()
         Generate(generator).ShouldBeOfType<InvalidOperationException>();
     }
 
+    [Fact]
+    public void ImplicitConversion_NoExceptionRegistered_ReturnsNull()
+    {
+        // Arrange
+        var generator = new FaultGenerator();
+
+        // Act
+        var fault = Generate(generator);
+
+        // Assert
+        fault.ShouldBeNull();
+    }
+
+    [Fact]
+    public void ImplicitConversion_AllWeightsZero_ReturnsNull()
+    {
+        // Arrange
+        var generator = new FaultGenerator();
+        generator.AddException<InvalidOperationException>(weight: 0);
+
+        // Act
+        var fault = Generate(generator);
+
+        // Assert
+        fault.ShouldBeNull();
+    }
+
     private static Exception? Generate(FaultGenerator generator)
     {
         Func<FaultGeneratorArguments, ValueTask<Exception?>> func = generator;