diff --git a/ws/controller.go b/ws/controller.go
index a671cdb..59d67ed 100644
--- a/ws/controller.go
+++ b/ws/controller.go
@@ -8,7 +8,7 @@ import (
 type Client struct {
 	Protocol   string      // choosen protocol (Sec-WebSocket-Protocol)
 	Arguments  [][]string  // URI parameters, index 0 is full URI, then matching groups
-	Store      struct{}    // store (for client implementation-specific data)
+	Store      interface{} // store (for client implementation-specific data)
 }
 
 // Represents a websocket controller callback function