diff --git a/src/modules/Elsa.CSharp/Handlers/GenerateWorkflowInputAccessors.cs b/src/modules/Elsa.CSharp/Handlers/GenerateWorkflowInputAccessors.cs
index d7adc0d31..ae6d3008d 100644
--- a/src/modules/Elsa.CSharp/Handlers/GenerateWorkflowInputAccessors.cs
+++ b/src/modules/Elsa.CSharp/Handlers/GenerateWorkflowInputAccessors.cs
@@ -18,7 +18,11 @@ public class GenerateWorkflowInputAccessors : INotificationHandler<EvaluatingCSh
     {
         var expressionExecutionContext = notification.Context;
         var workflowInputs = expressionExecutionContext.GetWorkflowInputs().ToList();
-        var workflow = expressionExecutionContext.GetWorkflowExecutionContext().Workflow;
+
+        if (!expressionExecutionContext.TryGetWorkflowExecutionContext(out var workflowExecutionContext))
+            return Task.CompletedTask;
+
+        var workflow = workflowExecutionContext.Workflow;
         var inputDefinitions = workflow.Inputs.ToList();
         var sb = new StringBuilder();
         sb.AppendLine("public partial class WorkflowInputsProxy {");