diff --git a/src/calibre/gui2/metadata/single.py b/src/calibre/gui2/metadata/single.py
index d35bddb011..4d6f856403 100644
--- a/src/calibre/gui2/metadata/single.py
+++ b/src/calibre/gui2/metadata/single.py
@@ -241,6 +241,14 @@ class MetadataSingleDialogBase(ResizableDialog):
         self.basic_metadata_widgets.extend([self.timestamp, self.pubdate])
 
         self.fetch_metadata_button = b = RightClickButton(self)
+        # The following rigmarole is needed so that Qt gives the button the
+        # same height as the other buttons in the dialog. There is no way to
+        # center the text in a QToolButton with an icon, so we cant just set an
+        # icon
+        b.setIcon(QIcon(I('download-metadata.png')))
+        b.setToolButtonStyle(Qt.ToolButtonTextBesideIcon)
+        b.setMinimumHeight(b.sizeHint().height())
+        b.setIcon(QIcon())
         b.setText(_('&Download metadata')), b.setPopupMode(b.DelayedPopup)
         b.setToolTip(_('Download metadata for this book [%s]') % self.download_shortcut.key().toString(QKeySequence.NativeText))
         b.setSizePolicy(QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed))