diff --git a/src/Chapter05.Tests/Listing05.33.ParameterValidationWithArgumentException.ThrowIfNull.Tests.cs b/src/Chapter05.Tests/Listing05.33.ParameterValidationWithArgumentNullException.ThrowIfNull.Tests.cs
similarity index 100%
rename from src/Chapter05.Tests/Listing05.33.ParameterValidationWithArgumentException.ThrowIfNull.Tests.cs
rename to src/Chapter05.Tests/Listing05.33.ParameterValidationWithArgumentNullException.ThrowIfNull.Tests.cs
diff --git a/src/Chapter05/Listing05.33.ParameterValidationWithArgumentException.ThrowIfNull.cs b/src/Chapter05/Listing05.33.ParameterValidationWithArgumentNullException.ThrowIfNull.cs
similarity index 100%
rename from src/Chapter05/Listing05.33.ParameterValidationWithArgumentException.ThrowIfNull.cs
rename to src/Chapter05/Listing05.33.ParameterValidationWithArgumentNullException.ThrowIfNull.cs