1 files changed, 4 insertions, 1 deletions
diff --git a/smtreemodel.cpp b/smtreemodel.cpp
index 088d393..4596a5b 100644
--- a/smtreemodel.cpp
+++ b/smtreemodel.cpp
@@ -62,8 +62,11 @@ QModelIndex SmTreeModel::parent(const QModelIndex &child) const{
 	}
 
     SmTreeItem *childItem = static_cast<SmTreeItem*>(child.internalPointer());
-	SmTreeItem *parentItem = childItem->parent();
+    if(childItem == mRootItem){
+        return QModelIndex();
+    }
 
+	SmTreeItem *parentItem = childItem->parent();
     if(parentItem == mRootItem){
         return QModelIndex();
     }