diff --git a/themes/tiddlywiki/vanilla/base.tid b/themes/tiddlywiki/vanilla/base.tid
index 69ba8e680e6..3b450e264fa 100644
--- a/themes/tiddlywiki/vanilla/base.tid
+++ b/themes/tiddlywiki/vanilla/base.tid
@@ -468,6 +468,11 @@ a.tc-tiddlylink-external:hover {
 	color: <<colour tiddler-link-background>>;
 }
 
+/* wikitext bodl for ''[[internal link]]'' */
+strong .tc-tiddlylink {
+	font-weight: bolder;
+}
+
 /*
 ** Drag and drop styles
 */