diff --git a/src/plugins/cppeditor/cppeditoroutline.cpp b/src/plugins/cppeditor/cppeditoroutline.cpp
index 05c521e0d31..d630a7ad1c6 100644
--- a/src/plugins/cppeditor/cppeditoroutline.cpp
+++ b/src/plugins/cppeditor/cppeditoroutline.cpp
@@ -150,12 +150,6 @@ QWidget *CppEditorOutline::widget() const
     return m_combo;
 }
 
-QSharedPointer<CPlusPlus::Document> getDocument(const Utils::FilePath &filePath)
-{
-    const CPlusPlus::Snapshot snapshot = CppModelManager::snapshot();
-    return snapshot.document(filePath);
-}
-
 void CppEditorOutline::updateNow()
 {
     m_combo->view()->expandAll();
diff --git a/src/plugins/cppeditor/cppeditoroutline.h b/src/plugins/cppeditor/cppeditoroutline.h
index d73c0fc363d..b7ac18dd0f4 100644
--- a/src/plugins/cppeditor/cppeditoroutline.h
+++ b/src/plugins/cppeditor/cppeditoroutline.h
@@ -5,7 +5,6 @@
 
 #include "cppoutlinemodel.h"
 
-#include <QModelIndex>
 #include <QObject>
 
 #include <memory>
@@ -16,7 +15,6 @@ class QSortFilterProxyModel;
 class QTimer;
 QT_END_NAMESPACE
 
-namespace TextEditor { class TextEditorWidget; }
 namespace Utils { class TreeViewComboBox; }
 
 namespace CppEditor {