diff --git a/src/calibre/gui2/preferences/tweaks.py b/src/calibre/gui2/preferences/tweaks.py
index 94fb6e50e4..515d7595d8 100644
--- a/src/calibre/gui2/preferences/tweaks.py
+++ b/src/calibre/gui2/preferences/tweaks.py
@@ -413,6 +413,7 @@ class ConfigWidget(ConfigWidgetBase):
         sb.sizePolicy().setHorizontalStretch(10)
         sb.setSizeAdjustPolicy(QComboBox.SizeAdjustPolicy.AdjustToMinimumContentsLength)
         sb.setMinimumContentsLength(10)
+        g.setColumnStretch(0, 100)
         g.addWidget(self.search, 0, 0, 1, 1)
         self.next_button = b = QPushButton(self)
         b.setIcon(QIcon(I("arrow-down.png")))