diff --git a/src/render.xml b/src/render.xml
index 63d5b18..461fc61 100644
--- a/src/render.xml
+++ b/src/render.xml
@@ -475,6 +475,7 @@ for licensing information.
   <request name="SetPictureFilter" opcode="30">
     <field type="PICTURE" name="picture" />
     <field type="CARD16" name="filter_len" />
+    <pad bytes="2" />
     <list type="char" name="filter">
       <fieldref>filter_len</fieldref>
     </list>