diff --git a/resources/default_tweaks.py b/resources/default_tweaks.py
index 5133aa0c34..21b397e80f 100644
--- a/resources/default_tweaks.py
+++ b/resources/default_tweaks.py
@@ -393,7 +393,7 @@ sort_dates_using_visible_fields = False
 cover_trim_fuzz_value = 10
 
 #: Control behavior of the book list
-# You can control the behavior of doubleclicks on the books list.
+# You can control the behavior of double clicks on the books list.
 # Choices: open_viewer, do_nothing,
 # edit_cell, edit_metadata. Selecting anything other than open_viewer has the
 # side effect of disabling editing a field using a single click.
diff --git a/src/calibre/gui2/book_details.py b/src/calibre/gui2/book_details.py
index 0f180a0dfa..7fa6b92bd7 100644
--- a/src/calibre/gui2/book_details.py
+++ b/src/calibre/gui2/book_details.py
@@ -460,7 +460,7 @@ class CoverView(QWidget):  # {{{
         except:
             sz = QSize(0, 0)
         self.setToolTip(
-            '<p>'+_('Double-click to open the Book details window') +
+            '<p>'+_('Double click to open the Book details window') +
             '<br><br>' + _('Path') + ': ' + current_path +
             '<br><br>' + _('Cover size: %(width)d x %(height)d pixels')%dict(
                 width=sz.width(), height=sz.height())
diff --git a/src/calibre/gui2/dialogs/quickview.py b/src/calibre/gui2/dialogs/quickview.py
index f0d1565b60..ddd66f75dc 100644
--- a/src/calibre/gui2/dialogs/quickview.py
+++ b/src/calibre/gui2/dialogs/quickview.py
@@ -451,7 +451,7 @@ class Quickview(QDialog, Ui_Quickview):
         self.books_table.setSortingEnabled(False)
         self.books_table.blockSignals(True)
         tt = ('<p>' +
-            _('Double-click on a book to change the selection in the library view or '
+            _('Double click on a book to change the selection in the library view or '
               'change the column shown in the left-hand pane. '
               'Shift- or control-double-click to edit the metadata of a book, '
               'which also changes the selected book.'
diff --git a/src/calibre/gui2/metadata/single.py b/src/calibre/gui2/metadata/single.py
index 68625d59b0..b7a8f2cece 100644
--- a/src/calibre/gui2/metadata/single.py
+++ b/src/calibre/gui2/metadata/single.py
@@ -836,7 +836,7 @@ class MetadataSingleDialog(MetadataSingleDialogBase):  # {{{
         l.addWidget(self.fetch_metadata_button, 10, 0, 1, 2)
         l.addWidget(self.config_metadata_button, 10, 2, 1, 1)
 
-        self.tabs[0].gb2 = gb = QGroupBox(_('Co&mments'), self)
+        self.tabs[0].gb2 = gb = QGroupBox(_('Comments'), self)
         gb.l = l = QVBoxLayout()
         gb.setLayout(l)
         l.addWidget(self.comments)
diff --git a/src/calibre/gui2/preferences/create_custom_column.py b/src/calibre/gui2/preferences/create_custom_column.py
index 84d02db258..3311bb257e 100644
--- a/src/calibre/gui2/preferences/create_custom_column.py
+++ b/src/calibre/gui2/preferences/create_custom_column.py
@@ -120,8 +120,8 @@ class CreateCustomColumn(QDialog):
             self.exec_()
             return
 
-        self.setWindowTitle(_('Edit a custom column'))
-        self.heading_label.setText('<b>' + _('Edit a custom column'))
+        self.setWindowTitle(_('Edit custom column'))
+        self.heading_label.setText('<b>' + _('Edit custom column'))
         self.shortcuts.setVisible(False)
         idx = current_row
         if idx < 0:
diff --git a/src/calibre/gui2/preferences/look_feel.ui b/src/calibre/gui2/preferences/look_feel.ui
index 22d41eda29..f7d4982b28 100644
--- a/src/calibre/gui2/preferences/look_feel.ui
+++ b/src/calibre/gui2/preferences/look_feel.ui
@@ -1183,7 +1183,7 @@ column being examined (the left-hand pane)</string>
 column being examined (the left-hand pane)</string>
            </property>
            <property name="text">
-            <string>&amp;Doubleclick changes examined column</string>
+            <string>&amp;Double click changes examined column</string>
            </property>
           </widget>
          </item>