diff --git a/Inc/config.h b/Inc/config.h
index a52c29b..5ce195c 100644
--- a/Inc/config.h
+++ b/Inc/config.h
@@ -692,7 +692,7 @@ pio run -t upload
   #define SERIAL_BUFFER_SIZE      64                      // [bytes] Size of Serial Rx buffer. Make sure it is always larger than the structure size
   #if defined(HOVERBRETT)
     #define SERIAL_TIMEOUT          20 // 20 = 0.1s = 100ms = 5*20ms
-  #elif
+  #else
     #define SERIAL_TIMEOUT          160                     // [-] Serial timeout duration for the received data. 160 ~= 0.8 sec. Calculation: 0.8 sec / 0.005 sec
   #endif
 #endif