diff --git a/source/Octopus.Client/Model/RunbookRunParameters.cs b/source/Octopus.Client/Model/RunbookRunParameters.cs
deleted file mode 100644
index a27648de8..000000000
--- a/source/Octopus.Client/Model/RunbookRunParameters.cs
+++ /dev/null
@@ -1,63 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-
-namespace Octopus.Client.Model
-{
-    public class RunbookRunParameters
-    {
-        /// <summary>
-        /// Parameter class for marshalling params between OctopusCLI and Octopus Server
-        /// This class is used to facilitate backwards compatibility while extending /runbooks/{id}/run"
-        /// </summary>
-        public RunbookRunParameters()
-        {
-            FormValues = new Dictionary<string, string>();
-            SpecificMachineIds = new string[0];
-            ExcludedMachineIds = new string[0];
-            EnvironmentIds = new string[0];
-            TenantTagNames = new string[0];
-            TenantIds = new string[0];
-            SkipActions = new string[0];
-        }
-
-        public bool UseDefaultSnapshot { get; set; } = true;
-
-        public string RunbookId { get; set; }
-        public string ProjectId { get; set; }
-        public string RunbookSnapshotNameOrId { get; set; }
-        public string EnvironmentId { get; set; }
-        public string[] EnvironmentIds { get; set; }
-        public bool ForcePackageDownload { get; set; }
-        public bool? UseGuidedFailure { get; set; }
-        public string[] SpecificMachineIds { get; set; }
-        public string[] ExcludedMachineIds { get; set; }
-        public string TenantId { get; set; }
-        public string[] TenantIds { get; set; }
-        public string[] TenantTagNames { get; set; }
-        public string[] SkipActions { get; set; }
-        public DateTimeOffset? QueueTime { get; set; }
-        public DateTimeOffset? QueueTimeExpiry { get; set; }
-        public Dictionary<string, string> FormValues { get; set; }
-
-        public static RunbookRunParameters MapFrom(RunbookRunResource runbookRun)
-        {
-            return new RunbookRunParameters
-            {
-                UseDefaultSnapshot = true,
-                RunbookId = runbookRun.RunbookId,
-                ProjectId = runbookRun.ProjectId,
-                EnvironmentId = runbookRun.EnvironmentId,
-                ForcePackageDownload = runbookRun.ForcePackageDownload,
-                UseGuidedFailure = runbookRun.UseGuidedFailure,
-                SpecificMachineIds = runbookRun.SpecificMachineIds.ToArray(),
-                ExcludedMachineIds = runbookRun.ExcludedMachineIds.ToArray(),
-                TenantId = runbookRun.TenantId,
-                SkipActions = runbookRun.SkipActions.ToArray(),
-                QueueTime = runbookRun.QueueTime,
-                QueueTimeExpiry = runbookRun.QueueTimeExpiry,
-                FormValues = runbookRun.FormValues
-            };
-        }
-    }
-}
\ No newline at end of file
diff --git a/source/Octopus.Client/Repositories/Async/RunbookRepository.cs b/source/Octopus.Client/Repositories/Async/RunbookRepository.cs
index 82cdb26ca..d7018f340 100644
--- a/source/Octopus.Client/Repositories/Async/RunbookRepository.cs
+++ b/source/Octopus.Client/Repositories/Async/RunbookRepository.cs
@@ -47,11 +47,6 @@ public Task<RunbookRunPreviewResource> GetPreview(DeploymentPromotionTarget prom
         }
 
         public Task<RunbookRunResource> Run(RunbookResource runbook, RunbookRunResource runbookRun)
-        {
-            return Run(runbook, RunbookRunParameters.MapFrom(runbookRun));
-        }
-
-        public Task<RunbookRunResource> Run(RunbookResource runbook, RunbookRunParameters runbookRun)
         {
             return Client.Post<object, RunbookRunResource>(runbook.Link("CreateRunbookRun"), runbookRun);
         }
diff --git a/source/Octopus.Client/Repositories/RunbookRepository.cs b/source/Octopus.Client/Repositories/RunbookRepository.cs
index eed22275c..dc6f3fdf3 100644
--- a/source/Octopus.Client/Repositories/RunbookRepository.cs
+++ b/source/Octopus.Client/Repositories/RunbookRepository.cs
@@ -1,4 +1,3 @@
-using System.Linq;
 using Octopus.Client.Editors;
 using Octopus.Client.Model;
 
@@ -13,7 +12,7 @@ public interface IRunbookRepository : IFindByName<RunbookResource>, IGet<Runbook
         RunbookRunPreviewResource GetPreview(DeploymentPromotionTarget promotionTarget);
         RunbookRunResource Run(RunbookResource runbook, RunbookRunResource runbookRun);
     }
-
+    
     class RunbookRepository : BasicRepository<RunbookResource>, IRunbookRepository
     {
         public RunbookRepository(IOctopusRepository repository)
@@ -45,15 +44,10 @@ public RunbookRunPreviewResource GetPreview(DeploymentPromotionTarget promotionT
         {
             return Client.Get<RunbookRunPreviewResource>(promotionTarget.Link("RunbookRunPreview"));
         }
-public RunbookRunResource Run(RunbookResource runbook, RunbookRunResource runbookRun)
-        {
-            return Run(runbook, RunbookRunParameters.MapFrom(runbookRun));
-        }
 
-        public RunbookRunResource Run(RunbookResource runbook, RunbookRunParameters runbookRun)
+        public RunbookRunResource Run(RunbookResource runbook, RunbookRunResource runbookRun)
         {
             return Client.Post<object, RunbookRunResource>(runbook.Link("CreateRunbookRun"), runbookRun);
         }
-
     }
 }
\ No newline at end of file