diff --git a/src/plugins/coreplugin/outputpanemanager.cpp b/src/plugins/coreplugin/outputpanemanager.cpp
index ee821d07c2f..ccb4372065a 100644
--- a/src/plugins/coreplugin/outputpanemanager.cpp
+++ b/src/plugins/coreplugin/outputpanemanager.cpp
@@ -541,7 +541,7 @@ void OutputPaneManager::initialize()
 
 void OutputPaneManager::setupButtons()
 {
-    for (auto pane : g_outputPanes)
+    for (auto &pane : g_outputPanes)
         delete pane.button;
 
     ActionContainer *mpanes = ActionManager::actionContainer(Constants::M_VIEW_PANES);