diff --git a/skin/blog/periwinkle/style.css b/skin/blog/periwinkle/style.css
index 378501d3c..cf1bb81d2 100644
--- a/skin/blog/periwinkle/style.css
+++ b/skin/blog/periwinkle/style.css
@@ -1130,7 +1130,7 @@ section.tag article li a.cloud1:active,
     width: 30px;
     z-index: 100;
     border: 1px solid #d8d8d8;
-    background-color: #e8e8e8;;
+    background-color: #e8e8e8;
 }
 
 #back_top i {