diff --git a/header/src/main/java/org/zstack/header/vm/APICreateVmInstanceMsg.java b/header/src/main/java/org/zstack/header/vm/APICreateVmInstanceMsg.java
index f6a924c477d..b7784188fee 100755
--- a/header/src/main/java/org/zstack/header/vm/APICreateVmInstanceMsg.java
+++ b/header/src/main/java/org/zstack/header/vm/APICreateVmInstanceMsg.java
@@ -78,7 +78,7 @@
         responseClass = APICreateVmInstanceEvent.class,
         parameterName = "params"
 )
-@DefaultTimeout(timeunit = TimeUnit.HOURS, value = 12)
+@DefaultTimeout(timeunit = TimeUnit.HOURS, value = 12) 
 public class APICreateVmInstanceMsg extends APICreateMessage implements APIAuditor, NewVmInstanceMessage2 {
     /**
      * @desc max length of 255 characters