diff --git a/src/calibre/gui2/book_details.py b/src/calibre/gui2/book_details.py
index a9a0894345..628f846aea 100644
--- a/src/calibre/gui2/book_details.py
+++ b/src/calibre/gui2/book_details.py
@@ -40,9 +40,10 @@ def render_html(mi, css, vertical, widget, all_fields=False): # {{{
 
     fi = QFontInfo(QApplication.font(widget))
     f = fi.pixelSize()+1
-    fam = unicode(fi.family()).strip()
+    fam = unicode(fi.family()).strip().replace('"', '')
     if not fam:
         fam = 'sans-serif'
+
     c = color_to_string(QApplication.palette().color(QPalette.Normal,
                     QPalette.WindowText))
     templ = u'''\
diff --git a/src/calibre/gui2/comments_editor.py b/src/calibre/gui2/comments_editor.py
index 8797c84661..e58b7117c1 100644
--- a/src/calibre/gui2/comments_editor.py
+++ b/src/calibre/gui2/comments_editor.py
@@ -253,7 +253,7 @@ class EditorWidget(QWebView): # {{{
             self.setHtml(val)
             fi = QFontInfo(QApplication.font(self))
             f  = fi.pixelSize()+1
-            fam = unicode(fi.family()).strip()
+            fam = unicode(fi.family()).strip().replace('"', '')
             if not fam:
                 fam = 'sans-serif'
             style = 'font-size: %fpx; font-family:"%s",sans-serif;' % (f, fam)