diff --git a/source/Octopus.Client/Model/DeploymentResource.cs b/source/Octopus.Client/Model/DeploymentResource.cs
index 27390ac47..cbb4ee146 100644
--- a/source/Octopus.Client/Model/DeploymentResource.cs
+++ b/source/Octopus.Client/Model/DeploymentResource.cs
@@ -65,6 +65,7 @@ public DeploymentResource()
         [WriteableOnCreate]
         public bool UseGuidedFailure { get; set; }
 
+        [Obsolete("Deployment comments were made obsolete by prompted variables. This property is no longer used.")]
         [WriteableOnCreate]
         public string Comments { get; set; }