diff --git a/content/treestyletab/res/icon32.png b/content/treestyletab/res/icon.png
similarity index 100%
rename from content/treestyletab/res/icon32.png
rename to content/treestyletab/res/icon.png
diff --git a/icon.png b/icon.png
new file mode 100644
index 00000000..b645331c
Binary files /dev/null and b/icon.png differ
diff --git a/install.rdf b/install.rdf
index d53eceb1..b79f8e20 100644
--- a/install.rdf
+++ b/install.rdf
@@ -9,7 +9,7 @@
                    em:creator="SHIMODA Hiroshi"
                    em:description="Show tabs like a tree."
                    em:homepageURL="http://piro.sakura.ne.jp/xul/_treestyletab.html.en"
-                   em:iconURL="chrome://treestyletab/content/res/icon32.png"
+                   em:iconURL="chrome://treestyletab/content/res/icon.png"
                    em:optionsURL="chrome://treestyletab/content/config.xul">