diff -ur synaptic-0.75.9ubuntu1deepin1/gtk/gtkbuilder/window_find.ui synaptic-0.75.9ubuntu1deepin1-patched/gtk/gtkbuilder/window_find.ui
--- synaptic-0.75.9ubuntu1deepin1/gtk/gtkbuilder/window_find.ui	2011-06-21 21:09:25.000000000 +0800
+++ synaptic-0.75.9ubuntu1deepin1-patched/gtk/gtkbuilder/window_find.ui	2012-05-21 22:05:05.129317076 +0800
@@ -144,6 +144,7 @@
                 <property name="has_default">True</property>
                 <property name="receives_default">False</property>
                 <accelerator key="Return" signal="clicked"/>
+                <accelerator key="KP_Enter" signal="clicked"/>
                 <signal name="clicked" handler="on_button_find_clicked" swapped="no"/>
                 <child>
                   <object class="GtkAlignment" id="alignment1">