diff --git a/main.h b/main.h
index a0ad8414..4ad8b1f0 100644
--- a/main.h
+++ b/main.h
@@ -66,7 +66,7 @@
 #define IHU_TEMP 2
 #define SPIN 1
 
-#define  - 1
+#define OFF -1
 #define ON 1
 #define CHECK 0
 #define DISABLED 0