diff --git a/addons/web/static/src/scss/report.scss b/addons/web/static/src/scss/report.scss
index b4a25ccbca9..36341133755 100644
--- a/addons/web/static/src/scss/report.scss
+++ b/addons/web/static/src/scss/report.scss
@@ -7,7 +7,7 @@ body {
     color: #000 !important;
     word-wrap: break-word;
 }
-.border-black td {
+.border-black td, .border-black th {
     border-top: 1px solid black !important;
 }