diff --git a/src/srv/server.cpp b/src/srv/server.cpp
index 74a2567..ab0d42d 100644
--- a/src/srv/server.cpp
+++ b/src/srv/server.cpp
@@ -32,7 +32,7 @@ auto respond(int count, auto req) {
       restinio::http_field::content_type, fmt::format("{}; charset=utf-8", content_type));
 
   if (cli.json) {
-    response.set_body(fmt::format("{{count:{}}}\n", count));
+    response.set_body(fmt::format("{{\"count\":{}}}", count));
   } else {
     response.set_body(fmt::format("{}\n", count));
   }