diff --git a/addons/symbolviewer/plugin_katesymbolviewer.h b/addons/symbolviewer/plugin_katesymbolviewer.h
--- a/addons/symbolviewer/plugin_katesymbolviewer.h
+++ b/addons/symbolviewer/plugin_katesymbolviewer.h
@@ -109,6 +109,10 @@
   private:
     KTextEditor::MainWindow *m_mainWindow;
     KatePluginSymbolViewer *m_plugin;
+    // I chose a more generic name because the "highlightMode" we ask
+    // is only a randomly suitable emergency aid,
+    // "m_docType" would be my preffered name, shorter but still full understandable.
+    QString     m_documentType;
     QMenu       *m_popup;
     QWidget     *m_toolview;
     QTreeWidget *m_symbols;
diff --git a/addons/symbolviewer/plugin_katesymbolviewer.cpp b/addons/symbolviewer/plugin_katesymbolviewer.cpp
--- a/addons/symbolviewer/plugin_katesymbolviewer.cpp
+++ b/addons/symbolviewer/plugin_katesymbolviewer.cpp
@@ -161,17 +161,25 @@
 
 void KatePluginSymbolViewerView::slotDocChanged()
 {
- parseSymbols();
+  // This time I have this block indent to be consistent (in this file) and some line wrapped
 
- KTextEditor::View *view = m_mainWindow->activeView();
- //qDebug()<<"Document changed !!!!" << view;
- if (view) {
-   connect(view, &KTextEditor::View::cursorPositionChanged, this, &KatePluginSymbolViewerView::cursorPositionChanged, Qt::UniqueConnection);
+  KTextEditor::View *view = m_mainWindow->activeView();
+  //qDebug()<<"Document changed !!!!" << view;
+  if (view) {
+    connect(view, &KTextEditor::View::cursorPositionChanged
+          , this, &KatePluginSymbolViewerView::cursorPositionChanged, Qt::UniqueConnection);
 
-   if (view->document()) {
-     connect(view->document(), &KTextEditor::Document::textChanged, this, &KatePluginSymbolViewerView::slotDocEdited, Qt::UniqueConnection);
-   }
- }
+    if (view->document()) {
+      connect(view->document(), &KTextEditor::Document::textChanged
+            , this, &KatePluginSymbolViewerView::slotDocEdited, Qt::UniqueConnection);
+
+      // So, once again: What's up with this mode() function? Is it deprecated or not?
+      // Get the current highlight mode as document type detector
+      m_documentType = view->document()->mode();
+    }
+  }
+
+  parseSymbols();
 }
 
 void KatePluginSymbolViewerView::slotDocEdited()
@@ -286,38 +294,29 @@
   if (!m_mainWindow->activeView())
     return;
 
-  KTextEditor::Document *doc = m_mainWindow->activeView()->document();
-
-  // be sure we have some document around !
-  if (!doc)
-    return;
-
-  /** Get the current highlighting mode */
-  QString hlModeName = doc->mode();
-
-  if (hlModeName.contains(QLatin1String("C++")) || hlModeName == QLatin1String("C") || hlModeName == QLatin1String("ANSI C89"))
+  if (m_documentType.contains(QLatin1String("C++")) || m_documentType == QLatin1String("C") || m_documentType == QLatin1String("ANSI C89"))
      parseCppSymbols();
- else if (hlModeName == QLatin1String("PHP (HTML)"))
+ else if (m_documentType == QLatin1String("PHP (HTML)"))
     parsePhpSymbols();
-  else if (hlModeName == QLatin1String("Tcl/Tk"))
+  else if (m_documentType == QLatin1String("Tcl/Tk"))
      parseTclSymbols();
-  else if (hlModeName == QLatin1String("Fortran"))
+  else if (m_documentType == QLatin1String("Fortran"))
      parseFortranSymbols();
-  else if (hlModeName == QLatin1String("Perl"))
+  else if (m_documentType == QLatin1String("Perl"))
      parsePerlSymbols();
-  else if (hlModeName == QLatin1String("Python"))
+  else if (m_documentType == QLatin1String("Python"))
      parsePythonSymbols();
- else if (hlModeName == QLatin1String("Ruby"))
+ else if (m_documentType == QLatin1String("Ruby"))
     parseRubySymbols();
-  else if (hlModeName == QLatin1String("Java"))
+  else if (m_documentType == QLatin1String("Java"))
      parseCppSymbols();
-  else if (hlModeName == QLatin1String("xslt"))
+  else if (m_documentType == QLatin1String("xslt"))
      parseXsltSymbols();
-  else if (hlModeName == QLatin1String("Bash"))
+  else if (m_documentType == QLatin1String("Bash"))
      parseBashSymbols();
-  else if (hlModeName == QLatin1String("ActionScript 2.0") ||
-    hlModeName == QLatin1String("JavaScript") ||
-    hlModeName == QLatin1String("QML"))
+  else if (m_documentType == QLatin1String("ActionScript 2.0") ||
+    m_documentType == QLatin1String("JavaScript") ||
+    m_documentType == QLatin1String("QML"))
      parseEcmaSymbols();
   else {
     QTreeWidgetItem *node = new QTreeWidgetItem(m_symbols);
@@ -325,7 +324,7 @@
     // Setting invalid line number avoid jump to top of document when clicked
     node->setText(1, QLatin1String("-1"));
     node = new QTreeWidgetItem(m_symbols);
-    node->setText(0, i18n("File type: %1", hlModeName));
+    node->setText(0, i18n("File type: %1", m_documentType));
     node->setText(1, QLatin1String("-1"));
   }