diff --git a/src/plugins/projectexplorer/projectnodes.h b/src/plugins/projectexplorer/projectnodes.h
index 168a046ffd7..e25b7855b0c 100644
--- a/src/plugins/projectexplorer/projectnodes.h
+++ b/src/plugins/projectexplorer/projectnodes.h
@@ -163,6 +163,7 @@ public:
 protected:
     Node();
     Node(const Node &other) = delete;
+    bool operator=(const Node &other) = delete;
 
     void setNodeType(NodeType nodeType);
     void setFilePath(const Utils::FileName &filePath);