diff --git a/clientgui/skins/WorldCommunityGrid/graphic/wcg_black_bacground.gif b/clientgui/skins/WorldCommunityGrid/graphic/wcg_black_bacground.gif
new file mode 100644
index 0000000000..2fe232c151
Binary files /dev/null and b/clientgui/skins/WorldCommunityGrid/graphic/wcg_black_bacground.gif differ
diff --git a/clientgui/skins/WorldCommunityGrid/graphic/wcg_black_bacground.png b/clientgui/skins/WorldCommunityGrid/graphic/wcg_black_bacground.png
deleted file mode 100644
index e1496c516b..0000000000
Binary files a/clientgui/skins/WorldCommunityGrid/graphic/wcg_black_bacground.png and /dev/null differ
diff --git a/clientgui/skins/WorldCommunityGrid/skin.xml b/clientgui/skins/WorldCommunityGrid/skin.xml
index 8dba67b196..16913ce169 100644
--- a/clientgui/skins/WorldCommunityGrid/skin.xml
+++ b/clientgui/skins/WorldCommunityGrid/skin.xml
@@ -35,7 +35,7 @@
       <right_arrow_button>graphic/arwRight.png</right_arrow_button>
       <right_arrow_clicked_button>graphic/arwRightClick.png</right_arrow_clicked_button>
       <animation_background>graphic/project_image.png</animation_background>
-      <default_wu_image>graphic/wcg_black_bacground.png</default_wu_image>
+      <default_wu_image>graphic/wcg_black_bacground.gif</default_wu_image>
       <icons>
          <workingWkUnit>
             <imgsrc>graphic/ico_workWU.png</imgsrc>