diff --git a/radio/src/pulses/sbus.cpp b/radio/src/pulses/sbus.cpp
index 26d4367b1..ceabb63e9 100644
--- a/radio/src/pulses/sbus.cpp
+++ b/radio/src/pulses/sbus.cpp
@@ -142,9 +142,9 @@ void setupPulsesSbus()
   // flags
   uint8_t flags=0;
   if (getChannelValue(EXTERNAL_MODULE, 16) > 0)
-    flags |=SBUS_FLAG_CHANNEL_17;
+    flags |= SBUS_FLAG_CHANNEL_17;
   if (getChannelValue(EXTERNAL_MODULE, 17) > 0)
-    flags |=SBUS_FLAG_CHANNEL_18;
+    flags |= SBUS_FLAG_CHANNEL_18;
 
   sendByteSbus(flags);