diff --git a/trefle/explorer/app.css b/trefle/explorer/app.css
index 2e1c0a956d4f9ae51b58fa2ffd1b76320dcbfd1e..37527a48f7a5e87ec64ca476c15afe4b4a09f065 100644
--- a/trefle/explorer/app.css
+++ b/trefle/explorer/app.css
@@ -118,7 +118,7 @@ p {
 }
 
 
-/*** FORMS ***//
+/*** FORMS ***/
 input[type=text],
 input[type=url] {
   line-height: 3em;