diff --git a/source/client/nodemcu/statusclient/config.h b/source/client/nodemcu/statusclient/config.h
index b078888..4281b2e 100644
--- a/source/client/nodemcu/statusclient/config.h
+++ b/source/client/nodemcu/statusclient/config.h
@@ -3,16 +3,16 @@
  */
 
 /* endpoint */
-#define SERVER_URL "status.kraut.space"
-#define SERVER_PORT 10001
+constexpr static inline char const SERVER_URL[] = "status.kraut.space";
+constexpr static inline uint16_t SERVER_PORT = 10001;
 
 /* serial interface settings */
-#define BAUD_RATE 115200
-#define DEBUG true
+constexpr static inline unsigned long BAUD_RATE = 115200;
+constexpr static inline bool DEBUG = true;
 
 /* frequence to read the pin */
-#define FREQUENCY 5000
+constexpr static inline unsigned long FREQUENCY = 5000;
 
 /* time server settings */
-#define NTP_URL "pool.ntp.org"
-#define TZ_STRING "CET-1CDT,M3.5.0,M10.5.0/3"
+constexpr static inline char const NTP_URL[] = "pool.ntp.org";
+constexpr static inline char const TZ_STRING[] = "CET-1CEST,M3.5.0,M10.5.0/3";
\ No newline at end of file