diff --git a/src/maca.c b/src/maca.c
index cd27d2b7f..7ab3d681b 100644
--- a/src/maca.c
+++ b/src/maca.c
@@ -315,6 +315,7 @@ const uint8_t ctov_4c[16] = {
 	0x0f,
 };
 
+/* tested good */
 #define ADDR_CHAN1 0x80009800
 #define ADDR_CHAN2 ADDR_CHAN1+12
 #define ADDR_CHAN3 ADDR_CHAN1+16