diff --git a/src/js/SlaveState.js b/src/js/SlaveState.js
index 304aa52b4f2f74c5ad50694a61098eabea76aea0..91b34c3c3bbee318477ef2b3c8a7a0fb41fc8929 100644
--- a/src/js/SlaveState.js
+++ b/src/js/SlaveState.js
@@ -474,6 +474,7 @@ App.Entity.EyeState = class EyeState {
 
 App.Entity.SlaveState = class SlaveState {
 	constructor() {
+		this.sceneParams = "";
 		/** Slave's current name */
 		this.slaveName = "blank";
 		/** Slave's current surname