diff --git a/ArduSub/RC_Channel.h b/ArduSub/RC_Channel.h
index 52b33c9d53..7b7139a1e9 100644
--- a/ArduSub/RC_Channel.h
+++ b/ArduSub/RC_Channel.h
@@ -19,7 +19,7 @@ public:
 
     RC_Channel_Sub obj_channels[NUM_RC_CHANNELS];
     RC_Channel_Sub *channel(const uint8_t chan) override {
-        if (chan > NUM_RC_CHANNELS) {
+        if (chan >= NUM_RC_CHANNELS) {
             return nullptr;
         }
         return &obj_channels[chan];