diff --git a/conf.hpp b/conf.hpp
index 428d446..f2157e1 100644
--- a/conf.hpp
+++ b/conf.hpp
@@ -60,5 +60,7 @@
 
 using PIDConf = std::map<std::string, struct ControllerInfo>;
 
+constexpr bool DEBUG = false; // enable to print found configuration
+
 } // namespace conf
 } // namespace pid_control