diff --git a/connection.go b/connection.go
index 091a6c47..397cc6f7 100644
--- a/connection.go
+++ b/connection.go
@@ -144,7 +144,3 @@ func (c *conn) namespace(nsp string) *namespaceHandler {
 	handler, _ := c.handlers.Get(nsp)
 	return handler
 }
-
-func (c *conn) parseArgs(types []reflect.Type) ([]reflect.Value, error) {
-	return c.decoder.DecodeArgs(types)
-}
diff --git a/connection_handlers.go b/connection_handlers.go
index c72a3baa..7e95f9c7 100644
--- a/connection_handlers.go
+++ b/connection_handlers.go
@@ -28,7 +28,7 @@ func ackPacketHandler(c *conn, header parser.Header) error {
 	if !ok {
 		// This should never get here and would be solved with generic sync.Map
 		logger.Info("Incorrect Ack functinxo type")
-		rawFunc = emtpyFH // keep going
+		handler = emtpyFH // keep going
 	}
 
 	// Read the body because Ack can have body as well
diff --git a/types.go b/types.go
index bef1fbe4..f109e796 100644
--- a/types.go
+++ b/types.go
@@ -1,7 +1,6 @@
 package socketio
 
 import (
-	"github.com/googollee/go-socket.io/parser"
 	"reflect"
 )
 
@@ -16,8 +15,6 @@ const (
 	clientDisconnectMsg = "client namespace disconnect"
 )
 
-type readHandler func(c *conn, header parser.Header) error
-
 var (
 	defaultHeaderType = []reflect.Type{reflect.TypeOf("")}
 )