diff --git a/src/modules/Elsa.Http/Activities/HttpEndpoint.cs b/src/modules/Elsa.Http/Activities/HttpEndpoint.cs
index 978ff6c83..ed94e5e90 100644
--- a/src/modules/Elsa.Http/Activities/HttpEndpoint.cs
+++ b/src/modules/Elsa.Http/Activities/HttpEndpoint.cs
@@ -166,7 +166,7 @@ public class HttpEndpoint : Trigger<HttpRequest>
 
         if (!context.IsTriggerOfWorkflow())
         {
-            context.CreateBookmarks(GetBookmarkPayloads(context.ExpressionExecutionContext), includeActivityInstanceId: false);
+            context.CreateBookmarks(GetBookmarkPayloads(context.ExpressionExecutionContext), includeActivityInstanceId: false, callback: OnResumeAsync);
             return;
         }
 
@@ -191,8 +191,10 @@ public class HttpEndpoint : Trigger<HttpRequest>
 
         if (httpContext == null)
         {
-            // We're not in an HTTP context, so let's fail.
-            throw new Exception("Cannot execute in a non-HTTP context");
+            // We're executing in a non-HTTP context (e.g. in a virtual actor).
+            // Create a bookmark to allow the invoker to export the state and resume execution from there.
+            context.CreateBookmark(OnResumeAsync, BookmarkMetadata.HttpCrossBoundary);
+            return;
         }
 
         await HandleRequestAsync(context, httpContext);