diff --git a/grade/report/grader/styles.css b/grade/report/grader/styles.css
index 3fc0b766486..7d9f80c3d73 100644
--- a/grade/report/grader/styles.css
+++ b/grade/report/grader/styles.css
@@ -34,6 +34,7 @@
 .dir-rtl.path-grade-report-grader .gradeparent table {
     border-left-width: 0;
     border-right-width: 1px;
+    max-width: initial;
 }
 
 /**