diff --git a/src/calibre/gui2/viewer/keys.py b/src/calibre/gui2/viewer/keys.py
index 02a3646c51..f5d60af260 100644
--- a/src/calibre/gui2/viewer/keys.py
+++ b/src/calibre/gui2/viewer/keys.py
@@ -78,6 +78,9 @@ SHORTCUTS = {
         'Search online': (['Ctrl+E'],
             _('Search online for word')),
 
+        'Table of Contents': (['Ctrl+T'],
+            _('Show/hide the Table of Contents')),
+
         'Lookup word': (['Ctrl+L'],
             _('Lookup word in dictionary')),
 
diff --git a/src/calibre/gui2/viewer/main.py b/src/calibre/gui2/viewer/main.py
index d636eff0c6..c5f28ddcab 100644
--- a/src/calibre/gui2/viewer/main.py
+++ b/src/calibre/gui2/viewer/main.py
@@ -933,6 +933,7 @@ class EbookViewer(MainWindow):
             'Next occurrence': self.view.search_action,
             'Bookmark': bac,
             'Reload': self.action_reload,
+            'Table of Contents': self.action_table_of_contents,
         }.get(key, None)
         if action is not None:
             event.accept()
diff --git a/src/calibre/gui2/viewer/ui.py b/src/calibre/gui2/viewer/ui.py
index 2c82de61c4..704a1f7b70 100644
--- a/src/calibre/gui2/viewer/ui.py
+++ b/src/calibre/gui2/viewer/ui.py
@@ -348,7 +348,7 @@ class Main(MainWindow):
         a('copy', _('Copy to clipboard'), 'edit-copy.png').setDisabled(True)
         a('font_size_larger', _('Increase font size'), 'font_size_larger.png')
         a('font_size_smaller', _('Decrease font size'), 'font_size_smaller.png')
-        a('table_of_contents', self.toc_dock, 'highlight_only_on.png')
+        a('table_of_contents', self.toc_dock, 'highlight_only_on.png', sc_name='Table of Contents')
         a('full_screen', _('Toggle full screen'), 'page.png', sc_name='Fullscreen').setCheckable(True)
         self.tool_bar.addSeparator()