diff --git a/src/plugins/texteditor/texteditorplugin.cpp b/src/plugins/texteditor/texteditorplugin.cpp
index b6981823a55..f5272a81a29 100644
--- a/src/plugins/texteditor/texteditorplugin.cpp
+++ b/src/plugins/texteditor/texteditorplugin.cpp
@@ -24,6 +24,7 @@
 #include "texteditorconstants.h"
 #include "texteditorsettings.h"
 #include "texteditortr.h"
+#include "textmark.h"
 
 #ifdef WITH_TESTS
 #include "codeassist/codeassist_test.h"
@@ -291,11 +292,6 @@ public:
     TextEditorPluginPrivate *d = nullptr;
 };
 
-QObject *pluginInstance()
-{
-    return m_instance;
-}
-
 void TextEditorPlugin::initialize()
 {
 #ifdef WITH_TESTS
@@ -305,6 +301,7 @@ void TextEditorPlugin::initialize()
     addTestCreator(createSnippetParserTest);
 #endif
 
+    setupTextMarkRegistry(this);
     setupOutlineFactory();
 
     d = new TextEditorPluginPrivate;
diff --git a/src/plugins/texteditor/texteditorplugin.h b/src/plugins/texteditor/texteditorplugin.h
index 35376c3b584..3a3f61fb46d 100644
--- a/src/plugins/texteditor/texteditorplugin.h
+++ b/src/plugins/texteditor/texteditorplugin.h
@@ -10,6 +10,4 @@ namespace TextEditor::Internal {
 class LineNumberFilter;
 LineNumberFilter *lineNumberFilter();
 
-QObject *pluginInstance();
-
 } // TextEditor::Internal
diff --git a/src/plugins/texteditor/textmark.cpp b/src/plugins/texteditor/textmark.cpp
index 2dd9deefd53..d988fdb5c23 100644
--- a/src/plugins/texteditor/textmark.cpp
+++ b/src/plugins/texteditor/textmark.cpp
@@ -33,13 +33,13 @@ class TextMarkRegistry : public QObject
 {
     Q_OBJECT
 public:
+    TextMarkRegistry(QObject *parent);
+
     static void add(TextMark *mark);
     static void add(TextMark *mark, TextDocument *document);
     static bool remove(TextMark *mark);
 
 private:
-    TextMarkRegistry(QObject *parent);
-    static TextMarkRegistry* instance();
     void editorOpened(Core::IEditor *editor);
     void documentRenamed(Core::IDocument *document,
                          const FilePath &oldPath,
@@ -49,6 +49,8 @@ private:
     QHash<Utils::FilePath, QSet<TextMark *> > m_marks;
 };
 
+TextMarkRegistry *m_instance = nullptr;
+
 class AnnotationColors
 {
 public:
@@ -64,8 +66,6 @@ private:
     static QHash<SourceColors, AnnotationColors> m_colorCache;
 };
 
-TextMarkRegistry *m_instance = nullptr;
-
 TextMark::TextMark(const FilePath &filePath, int lineNumber, TextMarkCategory category)
     : m_fileName(filePath)
     , m_lineNumber(lineNumber)
@@ -464,6 +464,8 @@ void TextMark::setIsLocationMarker(bool newIsLocationMarker)
 TextMarkRegistry::TextMarkRegistry(QObject *parent)
     : QObject(parent)
 {
+    m_instance = this;
+
     connect(EditorManager::instance(), &EditorManager::editorOpened,
             this, &TextMarkRegistry::editorOpened);
 
@@ -480,21 +482,14 @@ void TextMarkRegistry::add(TextMark *mark)
 
 void TextMarkRegistry::add(TextMark *mark, TextDocument *document)
 {
-    instance()->m_marks[mark->filePath()].insert(mark);
+    m_instance->m_marks[mark->filePath()].insert(mark);
     if (document)
         document->addMark(mark);
 }
 
 bool TextMarkRegistry::remove(TextMark *mark)
 {
-    return instance()->m_marks[mark->filePath()].remove(mark);
-}
-
-TextMarkRegistry *TextMarkRegistry::instance()
-{
-    if (!m_instance)
-        m_instance = new TextMarkRegistry(pluginInstance());
-    return m_instance;
+    return m_instance->m_marks[mark->filePath()].remove(mark);
 }
 
 void TextMarkRegistry::editorOpened(IEditor *editor)
@@ -574,6 +569,11 @@ AnnotationColors &AnnotationColors::getAnnotationColors(const QColor &markColor,
     return colors;
 }
 
+void setupTextMarkRegistry(QObject *guard)
+{
+    (void) new TextMarkRegistry(guard);
+}
+
 } // namespace TextEditor
 
 #include "textmark.moc"
diff --git a/src/plugins/texteditor/textmark.h b/src/plugins/texteditor/textmark.h
index b04e98ba5c3..27b0ef5e5cc 100644
--- a/src/plugins/texteditor/textmark.h
+++ b/src/plugins/texteditor/textmark.h
@@ -152,4 +152,6 @@ private:
     friend class TextDocumentLayout;
 };
 
+void setupTextMarkRegistry(QObject *guard);
+
 } // namespace TextEditor