diff --git a/src/Polly.Core/Timeout/TimeoutResilienceStrategyBuilderExtensions.cs b/src/Polly.Core/Timeout/TimeoutResilienceStrategyBuilderExtensions.cs
index 67b98891055..470440657f5 100644
--- a/src/Polly.Core/Timeout/TimeoutResilienceStrategyBuilderExtensions.cs
+++ b/src/Polly.Core/Timeout/TimeoutResilienceStrategyBuilderExtensions.cs
@@ -74,6 +74,8 @@ public static TBuilder AddTimeout<TBuilder>(this TBuilder builder, TimeoutStrate
         Guard.NotNull(builder);
         Guard.NotNull(options);
 
+        ValidationHelper.ValidateObject(options, "The timeout strategy options are invalid.*");
+
         builder.AddStrategy(context => new TimeoutResilienceStrategy(options, context.TimeProvider, context.Telemetry), options);
         return builder;
     }