diff --git a/radio/src/pulses/pulses_arm.h b/radio/src/pulses/pulses_arm.h
index 821f61f87..460dfed97 100644
--- a/radio/src/pulses/pulses_arm.h
+++ b/radio/src/pulses/pulses_arm.h
@@ -85,8 +85,8 @@ PACK(struct Dsm2PulsesData {
 #endif
 
 #define CROSSFIRE_BAUDRATE             200000
-#define CROSSFIRE_FRAME_LEN            25
-#define CROSSFIRE_CHANNELS_COUNT       16
+#define CROSSFIRE_FRAME_LEN            20
+#define CROSSFIRE_CHANNELS_COUNT       12
 PACK(struct CrossfirePulsesData {
   uint8_t pulses[CROSSFIRE_FRAME_LEN];
 });