diff --git a/IPython/html/static/notebook/less/widgetarea.less b/IPython/html/static/notebook/less/widgetarea.less
index fced548..64c0544 100644
--- a/IPython/html/static/notebook/less/widgetarea.less
+++ b/IPython/html/static/notebook/less/widgetarea.less
@@ -1,3 +1,7 @@
+.widget-label {
+    min-width: 300px;
+}
+
 div.widget-container {
     .box-flex2();
     .border-box-sizing();