diff --git a/ln.http/HttpEndpointController.cs b/ln.http/HttpEndpointController.cs
index b33bdac..f217689 100644
--- a/ln.http/HttpEndpointController.cs
+++ b/ln.http/HttpEndpointController.cs
@@ -111,6 +111,10 @@ namespace ln.http
                         } else if (_parameterInfos[n].ParameterType.Equals(typeof(TextReader)))
                         {
                             parameters[n] = new StreamReader(requestContext.Request.ContentStream);
+                        } else if (_parameterInfos[n].ParameterType.Equals(typeof(string)))
+                        {
+                            using (var r = new StreamReader(requestContext.Request.ContentStream))
+                                parameters[n] = r.ReadToEnd();
                         } else if (requestContext.Request.Headers.TryGetValue("Content-Type", out string contentType) &&
                                    contentType.Equals("application/json"))
                         {