diff --git a/include/tool/grid_helper.h b/include/tool/grid_helper.h
index 76d80256cb..67be107f40 100644
--- a/include/tool/grid_helper.h
+++ b/include/tool/grid_helper.h
@@ -112,6 +112,7 @@ protected:
     void clearAnchors()
     {
         m_anchors.clear();
+        m_snapItem = nullptr;
     }
 
     /**