diff --git a/src/http-api.ts b/src/http-api.ts
index bd26fcb..e2a1886 100644
--- a/src/http-api.ts
+++ b/src/http-api.ts
@@ -158,7 +158,7 @@ export class HttpApi {
         lastLevelObject[lastKey] = req.query[param];
       }
 
-      queryOptions.filter.protocol = req.params.protocol;
+      queryOptions.filter.protocol = decodeURIComponent(req.params.protocol);
       queryOptions.filter.protocolPath = req.params[0].replace(leadTailSlashRegex, '');
 
       const query = await RecordsQuery.create({