diff --git a/src/calibre/ebooks/conversion/plugins/docx_input.py b/src/calibre/ebooks/conversion/plugins/docx_input.py
index dc40dd526c..f1c7b6a578 100644
--- a/src/calibre/ebooks/conversion/plugins/docx_input.py
+++ b/src/calibre/ebooks/conversion/plugins/docx_input.py
@@ -21,13 +21,14 @@ class DOCXInput(InputFormatPlugin):
                    'turns off that behavior.')),
         OptionRecommendation(name='docx_no_pagebreaks_between_notes', recommended_value=False,
             help=_('Do not insert a page break after every endnote.')),
-        OptionRecommendation(name='docx_no_supsub_in_css', recommended_value=False,
-            help=_('Use top and bottom vertical-align values in stylesheet, instead of superscript and subscript.')),
+        OptionRecommendation(name='docx_inline_subsup', recommended_value=False,
+            help=_('Render superscripts and subscripts so that they do not affect the line height.')),
     }
 
     recommendations = set([('page_breaks_before', '/', OptionRecommendation.MED)])
 
     def convert(self, stream, options, file_ext, log, accelerators):
         from calibre.ebooks.docx.to_html import Convert
-        return Convert(stream, detect_cover=not options.docx_no_cover, log=log, notes_nopb=options.docx_no_pagebreaks_between_notes, nosupsub=options.docx_no_supsub_in_css)()
+        return Convert(stream, detect_cover=not options.docx_no_cover, log=log, notes_nopb=options.docx_no_pagebreaks_between_notes,
+                       nosupsub=options.docx_inline_subsup)()
 
diff --git a/src/calibre/gui2/convert/docx_input.py b/src/calibre/gui2/convert/docx_input.py
index c9d97090f5..63b302138f 100644
--- a/src/calibre/gui2/convert/docx_input.py
+++ b/src/calibre/gui2/convert/docx_input.py
@@ -18,6 +18,6 @@ class PluginWidget(Widget, Ui_Form):
 
     def __init__(self, parent, get_option, get_help, db=None, book_id=None):
         Widget.__init__(self, parent,
-            ['docx_no_cover', 'docx_no_pagebreaks_between_notes', 'docx_no_supsub_in_css'])
+            ['docx_no_cover', 'docx_no_pagebreaks_between_notes', 'docx_inline_subsup'])
         self.initialize_options(get_option, get_help, db, book_id)
 
diff --git a/src/calibre/gui2/convert/docx_input.ui b/src/calibre/gui2/convert/docx_input.ui
index 182a8acd8c..86df1ff0f6 100644
--- a/src/calibre/gui2/convert/docx_input.ui
+++ b/src/calibre/gui2/convert/docx_input.ui
@@ -29,9 +29,9 @@
     </widget>
    </item>
    <item>
-    <widget class="QCheckBox" name="opt_docx_no_supsub_in_css">
+    <widget class="QCheckBox" name="opt_docx_inline_subsup">
      <property name="text">
-      <string>Use top and bottom as vertical-align values in stylesheet, instead of superscript and subscript</string>
+      <string>Render superscripts and subscripts so that they do not affect the line height.</string>
      </property>
     </widget>
    </item>