diff --git a/sonoff/sonoff.h b/sonoff/sonoff.h
index 1695d1b68..04e3ab550 100644
--- a/sonoff/sonoff.h
+++ b/sonoff/sonoff.h
@@ -51,8 +51,6 @@ typedef unsigned long power_t;              // Power (Relay) type
 #define MAX_KNX_GA             10           // Max number of KNX Group Addresses to read that can be set
 #define MAX_KNX_CB             10           // Max number of KNX Group Addresses to write that can be set
 #define MAX_RULE_SIZE          512          // Max number of characters in rules
-#define MAX_KNX_GA             10           // Max number of KNX Group Addresses to read that can be set
-#define MAX_KNX_CB             10           // Max number of KNX Group Addresses to write that can be set
 
 #define MODULE                 SONOFF_BASIC // [Module] Select default model