1 files changed, 1 insertions, 1 deletions
diff --git a/lib/handlers/source.ts b/lib/handlers/source.ts
index f737d78d0..b1af530b7 100644
--- a/lib/handlers/source.ts
+++ b/lib/handlers/source.ts
@@ -55,7 +55,7 @@ export class SourceHandler {
             next();
             return;
         }
-        callback(rest)
+        callback(...rest)
             .then(response => {
                 this.addStaticHeaders(res);
                 res.send(response);