diff --git a/src/vs/workbench/contrib/preferences/browser/media/settingsWidgets.css b/src/vs/workbench/contrib/preferences/browser/media/settingsWidgets.css
index cebb3bdd089bf..04d78eea54aa0 100644
--- a/src/vs/workbench/contrib/preferences/browser/media/settingsWidgets.css
+++ b/src/vs/workbench/contrib/preferences/browser/media/settingsWidgets.css
@@ -38,6 +38,7 @@
 .settings-editor > .settings-body .settings-tree-container .setting-item.setting-item-list .setting-list-object-widget .setting-item-bool .setting-list-object-value {
 	width: 100%;
 	cursor: pointer;
+	flex: 1;
 }
 
 .settings-editor > .settings-body .settings-tree-container .setting-item.setting-item-list .setting-list-object-widget .setting-list-object-key {