=== modified file 'AptUrl/gtk/GtkUI.py'
--- AptUrl/gtk/GtkUI.py	2013-10-08 18:26:36 +0000
+++ AptUrl/gtk/GtkUI.py	2015-03-27 06:00:53 +0000
@@ -51,7 +51,7 @@
                               buttons=buttons)
         d.set_title("")
         d.set_markup("<big><b>%s</b></big>\n\n%s" % (summary, msg))
-        d.set_icon(Gtk.IconTheme.get_default().load_icon('deb', 16, False))
+        d.set_icon(Gtk.IconTheme.get_default().load_icon('package-x-generic', 16, False))
         d.set_keep_above(True)
         d.realize()
         d.get_window().set_functions(Gdk.WMFunction.MOVE)
@@ -164,7 +164,7 @@
         desc = "%s\n\n%s" % (summary, Helpers.format_description(description))
         tbuf.set_text(desc)
         description_text_view.set_buffer(tbuf)
-        dia.set_icon(Gtk.IconTheme.get_default().load_icon('deb', 16, False))
+        dia.set_icon(Gtk.IconTheme.get_default().load_icon('package-x-generic', 16, False))
 
         # check if another package manager is already running
         # FIXME: just checking for the existance of the file is

=== modified file 'data/apturl-gtk.ui'
--- data/apturl-gtk.ui	2013-04-09 11:22:53 +0000
+++ data/apturl-gtk.ui	2015-03-27 06:00:53 +0000
@@ -19,7 +19,7 @@
               <object class="GtkImage" id="dialog_image">
                 <property name="visible">True</property>
                 <property name="yalign">0</property>
-                <property name="stock">gtk-dialog-question</property>
+                <property name="stock">dialog-question</property>
                 <property name="icon_size">6</property>
               </object>
               <packing>

=== modified file 'debian/changelog'
--- debian/changelog	2015-01-26 18:03:14 +0000
+++ debian/changelog	2015-03-27 06:00:53 +0000
@@ -1,3 +1,10 @@
+apturl (0.5.2ubuntu6) UNRELEASED; urgency=medium
+
+  * Don't use legacy icon names, these are no longer available in
+    dwaita-icon-theme. (LP: #1437150) 
+
+ -- Tim Lunn <tim@feathertop.org>  Fri, 27 Mar 2015 16:56:09 +1100
+
 apturl (0.5.2ubuntu5) vivid; urgency=medium
 
   * Switch gnome-icon-theme to adwaita-icon-theme, which is its