diff --git a/sw/airborne/boards/lia/baro_board.h b/sw/airborne/boards/lia/baro_board.h
index d65c11d266..59782132c8 100644
--- a/sw/airborne/boards/lia/baro_board.h
+++ b/sw/airborne/boards/lia/baro_board.h
@@ -9,8 +9,8 @@
 
 #include "std.h"
 
-extern void baro_event(void (*b_abs_handler)(void), void (*b_diff_handler)(void));
+extern void baro_event(void (*b_abs_handler)(void));
 
-#define BaroEvent(_b_abs_handler, _b_diff_handler) baro_event(_b_abs_handler,_b_diff_handler)
+#define BaroEvent(_b_abs_handler, _b_diff_handler) baro_event(_b_abs_handler)
 
 #endif /* BOARDS_LIA_BARO_H */