diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/public/resources/uploader/css/src/upload.css b/openbis/source/java/ch/systemsx/cisd/openbis/public/resources/uploader/css/src/upload.css
index fe240c39d22e56fb31ef7a917a7fdee518e025cf..1766c60fd8b0f6f7ef91a110964c045406b8e035 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/public/resources/uploader/css/src/upload.css
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/public/resources/uploader/css/src/upload.css
@@ -150,7 +150,7 @@ button:hover {
     padding: 1px;
     display: inline-block;
     width: 50px;
-    height: 12px;
+    height: 16px;
     border: 1px solid #000;
     background-color: #fff;
 }