diff --git a/registry.go b/registry.go
index 6758b98..fe39c6e 100644
--- a/registry.go
+++ b/registry.go
@@ -116,9 +116,14 @@ func (rr *rpcRegistry) Invoke(contentType string, r io.Reader, w io.Writer, befo
 	}
 	// Call the service method.
 	reply := reflect.New(methodSpec.replyType)
+	// errValue := methodSpec.method.Func.Call([]reflect.Value{
+	// 	serviceSpec.rcvr,
+	// 	reflect.ValueOf(r),
+	// 	args,
+	// 	reply,
+	// })
 	errValue := methodSpec.method.Func.Call([]reflect.Value{
 		serviceSpec.rcvr,
-		reflect.ValueOf(r),
 		args,
 		reply,
 	})
diff --git a/service_map.go b/service_map.go
index 34bc314..f3a7be7 100644
--- a/service_map.go
+++ b/service_map.go
@@ -3,7 +3,6 @@ package rpc
 import (
 	"fmt"
 	"log"
-	"net/http"
 	"reflect"
 	"strings"
 	"sync"
@@ -13,8 +12,8 @@ import (
 
 var (
 	// Precompute the reflect.Type of error and http.Request
-	typeOfError   = reflect.TypeOf((*error)(nil)).Elem()
-	typeOfRequest = reflect.TypeOf((*http.Request)(nil)).Elem()
+	typeOfError = reflect.TypeOf((*error)(nil)).Elem()
+	// typeOfRequest = reflect.TypeOf((*http.Request)(nil)).Elem()
 )
 
 // ----------------------------------------------------------------------------
@@ -72,25 +71,40 @@ func (m *serviceMap) register(rcvr interface{}, name string) error {
 		if method.PkgPath != "" {
 			continue
 		}
-		// Method needs four ins: receiver, *http.Request, *args, *reply.
-		if mtype.NumIn() != 4 {
+		// // Method needs four ins: receiver, *http.Request, *args, *reply.
+		// if mtype.NumIn() != 4 {
+		// 	continue
+		// }
+		// // First argument must be a pointer and must be http.Request.
+		// reqType := mtype.In(1)
+		// if reqType.Kind() != reflect.Ptr || reqType.Elem() != typeOfRequest {
+		// 	continue
+		// }
+		// // Second argument must be a pointer and must be exported.
+		// args := mtype.In(2)
+		// if args.Kind() != reflect.Ptr || !isExportedOrBuiltin(args) {
+		// 	continue
+		// }
+		// // Third argument must be a pointer and must be exported.
+		// reply := mtype.In(3)
+		// if reply.Kind() != reflect.Ptr || !isExportedOrBuiltin(reply) {
+		// 	continue
+		// }
+		// Method needs four ins: receiver, *args, *reply.
+		if mtype.NumIn() != 3 {
 			continue
 		}
-		// First argument must be a pointer and must be http.Request.
-		reqType := mtype.In(1)
-		if reqType.Kind() != reflect.Ptr || reqType.Elem() != typeOfRequest {
-			continue
-		}
-		// Second argument must be a pointer and must be exported.
-		args := mtype.In(2)
+		// First argument must be a pointer and must be exported.
+		args := mtype.In(1)
 		if args.Kind() != reflect.Ptr || !isExportedOrBuiltin(args) {
 			continue
 		}
-		// Third argument must be a pointer and must be exported.
-		reply := mtype.In(3)
+		// Second argument must be a pointer and must be exported.
+		reply := mtype.In(2)
 		if reply.Kind() != reflect.Ptr || !isExportedOrBuiltin(reply) {
 			continue
 		}
+
 		// Method needs one out: error.
 		if mtype.NumOut() != 1 {
 			continue