diff --git a/src/NestedSetsBehavior.php b/src/NestedSetsBehavior.php
index 211d7d9..3113d17 100644
--- a/src/NestedSetsBehavior.php
+++ b/src/NestedSetsBehavior.php
@@ -1070,10 +1070,7 @@ protected function beforeInsertNode(int $value, int $depth): void
      */
     protected function beforeInsertRootNode(): void
     {
-        if (
-            $this->treeAttribute === false &&
-            $this->getOwner()::find()->andWhere([$this->leftAttribute => 1])->exists()
-        ) {
+        if ($this->treeAttribute === false && $this->getOwner()::find()->exists()) {
             throw new Exception('Can not create more than one root when "treeAttribute" is false.');
         }