diff --git a/src/plugins/projectexplorer/toolchainoptionspage.cpp b/src/plugins/projectexplorer/toolchainoptionspage.cpp
index 71355fc3dd9..eceb1b81a43 100644
--- a/src/plugins/projectexplorer/toolchainoptionspage.cpp
+++ b/src/plugins/projectexplorer/toolchainoptionspage.cpp
@@ -309,8 +309,7 @@ void ToolChainModel::apply()
     }
     //
     foreach (ToolChainNode *n, m_toAddList) {
-        delete n->toolChain;
-        n->toolChain = 0;
+        markForRemoval(n->toolChain);
     }
     qDeleteAll(m_toAddList);
 }