diff --git a/phpBB/adm/style/admin.css b/phpBB/adm/style/admin.css
index 992af0997f..23bd563ba0 100644
--- a/phpBB/adm/style/admin.css
+++ b/phpBB/adm/style/admin.css
@@ -17,6 +17,10 @@
 	font-size: 100%;
 }
 
+abbr {
+	text-decoration: none;
+}
+
 body, div, p, th, td, li, dd {
 	font-size: x-small;
 	voice-family: "\"}\"";
diff --git a/phpBB/styles/prosilver/theme/common.css b/phpBB/styles/prosilver/theme/common.css
index 702960f47c..19b0f65a2d 100644
--- a/phpBB/styles/prosilver/theme/common.css
+++ b/phpBB/styles/prosilver/theme/common.css
@@ -43,6 +43,9 @@ table {
 	border-collapse: collapse;
 	border-spacing: 0;
 }
+abbr {
+	text-decoration: none;
+}
 
 /* General Markup Styles
 ---------------------------------------- */