diff --git a/core/BehaviorTree.go b/core/BehaviorTree.go
index 3b193f6..e16da55 100644
--- a/core/BehaviorTree.go
+++ b/core/BehaviorTree.go
@@ -295,16 +295,12 @@ func (this *BehaviorTree) Tick(target interface{}, blackboard *Blackboard) b3.St
 	var currOpenNodes []IBaseNode
 	currOpenNodes = append(currOpenNodes, tick._openNodes...)
 
-	var same bool
 	l := len(lastOpenNodes)
 	if l == len(currOpenNodes) {
 		if l == 0 || lastOpenNodes[l-1] == currOpenNodes[l-1] {
-			same = true
+			return state
 		}
 	}
-	if same {
-		return state
-	}
 
 	// does not close if it is still open in this tick
 	var start = 0