diff --git a/grade/grading/form/rubric/styles.css b/grade/grading/form/rubric/styles.css
index 66dc3c01a09..0c046741af1 100644
--- a/grade/grading/form/rubric/styles.css
+++ b/grade/grading/form/rubric/styles.css
@@ -82,7 +82,7 @@
 .gradingform_rubric.editor .criterion.last .controls .movedown input {display:none;}
 
 /* evaluation */
-.gradingform_rubric .criterion .levels .level.checked {background:#d0ffd0;}
+.gradingform_rubric .criterion .levels .level.checked {background:#d0ffd0;border:1px solid #555;}
 .gradingform_rubric.evaluate .criterion .levels .level:hover {background:#30ff30;}
 
 /* replace buttons with images */