diff --git a/datasette/app.py b/datasette/app.py
index c71968fc..3ff5267e 100644
--- a/datasette/app.py
+++ b/datasette/app.py
@@ -626,7 +626,7 @@ class TableView(BaseView):
                     other_table, label = expanded[(column, value)]
                     display_value = jinja2.Markup(
                         # TODO: Escape id/label/etc so no XSS here
-                        '<a href="/{database}-{database_hash}/{table}/{id}">{label}</a>'.format(
+                        '<a href="/{database}-{database_hash}/{table}/{id}">{label}</a> <em>{id}</em>'.format(
                             database=database,
                             database_hash=database_hash,
                             table=escape_sqlite_table_name(other_table),
diff --git a/datasette/static/app.css b/datasette/static/app.css
index a3685c65..386fe81a 100644
--- a/datasette/static/app.css
+++ b/datasette/static/app.css
@@ -18,6 +18,11 @@ td {
     padding: 4px;
     vertical-align: top;
 }
+td em {
+    font-style: normal;
+    font-size: 0.8em;
+    color: #aaa;
+}
 th {
     padding-right: 1em;
 }