diff --git a/src/httpserver.h b/src/httpserver.h
index 0e30e666a..49d67f4b8 100644
--- a/src/httpserver.h
+++ b/src/httpserver.h
@@ -33,7 +33,7 @@ void InterruptHTTPServer();
 void StopHTTPServer();
 
 /** Handler for requests to a certain HTTP path */
-typedef std::function<void(HTTPRequest* req, const std::string &)> HTTPRequestHandler;
+typedef std::function<bool(HTTPRequest* req, const std::string &)> HTTPRequestHandler;
 /** Register handler for prefix.
  * If multiple handlers match a prefix, the first-registered one will
  * be invoked.