diff --git a/exec/load/json-client.js b/exec/load/json-client.js
index 8e11825f738c39295ed4b54db77e5b48ed4d4702..41b8ca4f02e21c27d4eb1dc800fbd52fad96fe12 100644
--- a/exec/load/json-client.js
+++ b/exec/load/json-client.js
@@ -130,11 +130,7 @@ function JSONClient(serverAddr,serverPort) {
 	
 	/* unlock an object */ 
 	this.unlock = function(scope,location) {
-		this.send(scope,"QUERY",{
-            location:location,
-			oper:"LOCK",
-			data:-1,
-        });
+		this.lock(-1);
 	}
     
 	/* read object data (lock for reading or writing, blocking) */