diff --git a/Octokit.Tests.Conventions/ModelTests.cs b/Octokit.Tests.Conventions/ModelTests.cs
index f126e8cd57..c0b2dd8cc3 100644
--- a/Octokit.Tests.Conventions/ModelTests.cs
+++ b/Octokit.Tests.Conventions/ModelTests.cs
@@ -85,6 +85,12 @@ public void ResponseModelsHaveReadOnlyCollections(Type modelType)
                         continue;
                     }
 
+                    // Let's skip collections that only have a private Setter
+                    if (property.SetMethod != null && property.SetMethod.IsPrivate)
+                    {
+                        continue;
+                    }
+
                     mutableCollectionProperties.Add(property);
                 }
             }