diff --git a/boards/atl/mantis-edu/src/board_config.h b/boards/atl/mantis-edu/src/board_config.h
index 8b8a99b12e86..f589a6b728f8 100644
--- a/boards/atl/mantis-edu/src/board_config.h
+++ b/boards/atl/mantis-edu/src/board_config.h
@@ -64,9 +64,6 @@
 // Hacks for MAVLink RC button input
 #define ATL_MANTIS_RC_INPUT_HACKS
 
-// Hacks for MAVLink RC button input
-#define ATL_MANTIS_RC_INPUT_HACKS
-
 /*
  * ADC channels
  *