diff --git a/ui-blame.c b/ui-blame.c
index 50d0580..c9cca18 100644
--- a/ui-blame.c
+++ b/ui-blame.c
@@ -170,7 +170,7 @@
 
 	/* Line numbers */
 	if (ctx.cfg.enable_tree_linenumbers) {
-		html("<td class='linenumbers'>");
+		html("<td id='linenumbers' class='linenumbers'>");
 		for (ent = sb.ent; ent; ent = ent->next) {
 			html("<div class='alt'><pre>");
 			emit_blame_entry_linenumber(ent);