diff --git a/phpBB/styles/subSilver/theme/stylesheet.css b/phpBB/styles/subSilver/theme/stylesheet.css
index 97864bbb56..5ee61cb4aa 100644
--- a/phpBB/styles/subSilver/theme/stylesheet.css
+++ b/phpBB/styles/subSilver/theme/stylesheet.css
@@ -666,4 +666,8 @@ pre {
 
 .nowrap {
 	white-space: nowrap;
+}
+
+.username-coloured {
+	font-weight: bold;
 }
\ No newline at end of file