diff --git a/src/plugins/texteditor/basetextdocument.h b/src/plugins/texteditor/basetextdocument.h
index 09d8fa18824..eb08ca2bdec 100644
--- a/src/plugins/texteditor/basetextdocument.h
+++ b/src/plugins/texteditor/basetextdocument.h
@@ -118,7 +118,6 @@ public slots:
     void setFontSettings(const TextEditor::FontSettings &fontSettings);
 
 signals:
-    void mimeTypeChanged();
     void tabSettingsChanged();
     void fontSettingsChanged();