diff --git a/src/routes/custom.js b/src/routes/custom.js
index 077c730cd..f32f7445f 100644
--- a/src/routes/custom.js
+++ b/src/routes/custom.js
@@ -19,7 +19,7 @@ function handleRequest(req, res) {
             continue;
         }
 
-        const regex = new RegExp(attr.value);
+        const regex = new RegExp(`^${attr.value}$`);
         let match;
 
         try {