diff --git a/lib/src/RestApi.hpp b/lib/src/RestApi.hpp
index 5029870..961f68b 100644
--- a/lib/src/RestApi.hpp
+++ b/lib/src/RestApi.hpp
@@ -7,7 +7,7 @@
 
 namespace RestApi
 {
-    void start_rest_api(crow::SimpleApp app, WriterManager& writer_manager, uint16_t port);
+    void start_rest_api(WriterManager& writer_manager, uint16_t port);
 }
 
 #endif