diff --git a/app/assets/images/sprite.png b/app/assets/images/sprite.png
deleted file mode 100644
index e25617013..000000000
Binary files a/app/assets/images/sprite.png and /dev/null differ
diff --git a/app/assets/stylesheets/common.scss b/app/assets/stylesheets/common.scss
index c3a31d834..6a6e45186 100644
--- a/app/assets/stylesheets/common.scss
+++ b/app/assets/stylesheets/common.scss
@@ -37,8 +37,7 @@ time[title] {
   vertical-align: top;
   width: 20px;
   height: 20px;
-  background: transparent image-url("sprite.png") no-repeat 0 0;
-  background-image: image-url("sprite.svg");
+  background: transparent image-url("sprite.svg") no-repeat 0 0;
   text-indent: -9999px;
   overflow: hidden;
 }