diff --git a/src/open9x.h b/src/open9x.h
index 422cc3bd2..edb130c1a 100644
--- a/src/open9x.h
+++ b/src/open9x.h
@@ -356,7 +356,7 @@ enum EnumKeys {
 
 #define NUM_XCHNRAW (NUM_STICKS+NUM_POTS+1/*MAX*/+1/*ID3*/+3/*CYC1-CYC3*/+NUM_PPM+NUM_CHNOUT)
 #define NUM_XCHNCSW (NUM_XCHNRAW+MAX_TIMERS+NUM_TELEMETRY)
-#define NUM_XCHNMIX (NUM_XCHNCSW+MAX_SWITCH)
+#define NUM_XCHNMIX (NUM_XCHNRAW+MAX_SWITCH)
 
 #define DSW_THR  1
 #define DSW_RUD  2