diff --git a/src/calibre/gui2/__init__.py b/src/calibre/gui2/__init__.py
index f0f069639a..8ad0291d19 100644
--- a/src/calibre/gui2/__init__.py
+++ b/src/calibre/gui2/__init__.py
@@ -762,6 +762,11 @@ class Application(QApplication):
                     self.setStyle('Plastique')
                 elif 'Cleanlooks' in styles:
                     self.setStyle('Cleanlooks')
+        # Ensure that pushbuttons with no icons are not narrower than
+        # pushbuttons with icons
+        from PyQt4.Qt import QPushButton
+        w = QPushButton()
+        self.setStyleSheet('QPushButton { min-height: %dpx }'%w.iconSize().height())
 
     def _send_file_open_events(self):
         with self._file_open_lock: