--- a/src/hugin1/hugin/xrc/assistant_panel.xrc
+++ b/src/hugin1/hugin/xrc/assistant_panel.xrc
@@ -60,6 +60,7 @@
                               </object>
                               <object class="sizeritem">
                                 <object class="wxChoice" name="ass_lens_proj_choice">
+                                  <size>200,-1</size>
                                   <content>
                                     <item/></content>
                                 </object>
@@ -362,4 +363,4 @@
     </object>
     <style>wxCAPTION|wxRESIZE_BORDER</style>
   </object>
-</resource>+</resource>