diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/public/resources/css/gxt-gray.css b/openbis/source/java/ch/systemsx/cisd/openbis/public/resources/css/gxt-gray.css
index 9467cf55319c5bf9da665fa2c6d2b60083e00543..648e65c2d40e8374cd41bbaa5f57ff17db80f565 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/public/resources/css/gxt-gray.css
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/public/resources/css/gxt-gray.css
@@ -147,6 +147,10 @@
 	background-image: url(../images/gray/qtip/tip-sprite.gif);
 }
 
+.x-tip-anchor {
+    background-image:url(../images/gray/qtip/tip-anchor-sprite.gif);
+}
+
 /* Toolbars */
 
 .x-toolbar{
diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/public/resources/images/gray/qtip/tip-anchor-sprite.gif b/openbis/source/java/ch/systemsx/cisd/openbis/public/resources/images/gray/qtip/tip-anchor-sprite.gif
new file mode 100644
index 0000000000000000000000000000000000000000..19259b161c282a3f87993b03df716326c7b679cd
Binary files /dev/null and b/openbis/source/java/ch/systemsx/cisd/openbis/public/resources/images/gray/qtip/tip-anchor-sprite.gif differ