diff --git a/Octokit.Tests.Conventions/TypeExtensions.cs b/Octokit.Tests.Conventions/TypeExtensions.cs
index 0148b0cd..6d490caf 100644
--- a/Octokit.Tests.Conventions/TypeExtensions.cs
+++ b/Octokit.Tests.Conventions/TypeExtensions.cs
@@ -61,7 +61,7 @@ namespace Octokit.Tests.Conventions
 
         public static bool IsClientInterface(this Type type)
         {
-            return type.IsInterface && type.Name.EndsWith(ClientSufix) && type.Namespace == typeof(IEventsClient).Namespace;
+            return type.IsInterface && type.Name.EndsWith(ClientSuffix) && type.Namespace == typeof(IEventsClient).Namespace;
         }
 
         public static Type GetObservableClientInterface(this Type type)