diff --git a/src/calibre/gui2/dialogs/tag_categories.ui b/src/calibre/gui2/dialogs/tag_categories.ui
index 20ded9878f..c49bb95de0 100644
--- a/src/calibre/gui2/dialogs/tag_categories.ui
+++ b/src/calibre/gui2/dialogs/tag_categories.ui
@@ -110,7 +110,7 @@
        <item row="0" column="0">
         <widget class="QToolButton" name="delete_category_button">
          <property name="toolTip">
-          <string>Delete this selected tag category</string>
+          <string>Delete the current tag category</string>
          </property>
          <property name="text">
           <string>...</string>
diff --git a/src/calibre/gui2/tweak_book/ui.py b/src/calibre/gui2/tweak_book/ui.py
index 9cdfc7ec89..fb6ee00b7d 100644
--- a/src/calibre/gui2/tweak_book/ui.py
+++ b/src/calibre/gui2/tweak_book/ui.py
@@ -348,7 +348,7 @@ class Main(MainWindow):
         self.action_new_file = treg('document-new.png', _('&New file (images/fonts/HTML/etc.)'), self.boss.add_file,
                                    'new-file', (), _('Create a new file in the current book'))
         self.action_import_files = treg('document-import.png', _('&Import files into book'), self.boss.add_files, 'new-files', (), _('Import files into book'))
-        self.action_open_book = treg('document_open.png', _('&Open book'), self.boss.open_book, 'open-book', 'Ctrl+O', _('Open a new book'))
+        self.action_open_book = treg('document_open.png', _('&Open book'), self.boss.open_book, 'open-book', 'Ctrl+O', _('Open a book'))
         self.action_open_book_folder = treg('mimetypes/dir.png', _('Open &folder (unzipped EPUB) as book'), partial(self.boss.open_book, open_folder=True),
                                             'open-folder-as-book', (), _('Open a folder (unzipped EPUB) as a book'))
         self.action_edit_next_file = treg('arrow-down.png', _('Edit &next file'), partial(self.boss.edit_next_file, backwards=False),
diff --git a/src/pyj/read_book/overlay.pyj b/src/pyj/read_book/overlay.pyj
index 626099082d..f4f853c06b 100644
--- a/src/pyj/read_book/overlay.pyj
+++ b/src/pyj/read_book/overlay.pyj
@@ -252,7 +252,7 @@ class MainOverlay:  # {{{
         forward_action = ac(_('Forward'), None, self.forward, 'arrow-right')
         if runtime.is_standalone_viewer:
             reload_actions = E.ul(
-                ac(_('Open book'), _('Open a new book'), self.overlay.open_book, 'book'),
+                ac(_('Open book'), _('Open a book'), self.overlay.open_book, 'book'),
                 reload_action
             )
             nav_actions = E.ul(back_action, forward_action)
@@ -506,7 +506,7 @@ class OpenBook: # {{{
                             ui_operations.quit()
                     ,
                     class_='simple-link'),
-                E.h2(_('Open a new book'), style='margin-left: 1rem'),
+                E.h2(_('Open a book'), style='margin-left: 1rem'),
             ))
         create_open_book(container, self.overlay.view?.book)
 # }}}