diff --git a/examples/arduino-rx/arduino-rx.ino b/examples/arduino-rx/arduino-rx.ino
index f989336..3b55bb4 100644
--- a/examples/arduino-rx/arduino-rx.ino
+++ b/examples/arduino-rx/arduino-rx.ino
@@ -2,10 +2,7 @@
 
 #include <PDM.h>
 
-const int kPinLed0    = 13;
 const int kPinSpeaker = 10;
-const int kPinButton0 = 2;
-const int kPinButton1 = 4;
 
 using TSample = int16_t;
 static const size_t kSampleSize_bytes = sizeof(TSample);
@@ -62,10 +59,7 @@ void setup() {
     Serial.begin(57600);
     while (!Serial);
 
-    pinMode(kPinLed0,    OUTPUT);
     pinMode(kPinSpeaker, OUTPUT);
-    pinMode(kPinButton0, INPUT);
-    pinMode(kPinButton1, INPUT);
 
     // Configure the data receive callback
     PDM.onReceive(onPDMdata);
diff --git a/include/ggwave/ggwave.h b/include/ggwave/ggwave.h
index ba7a7d0..9578b26 100644
--- a/include/ggwave/ggwave.h
+++ b/include/ggwave/ggwave.h
@@ -437,8 +437,9 @@ public:
     //    - GGWave::Protocols::tx()
     //
     //  For optimal performance and minimum memory usage, make sure to enable only the
-    //  Rx and Tx protocols that you need. For example, using a single protocol for Tx
-    //  is achieved like this:
+    //  Rx and Tx protocols that you need.
+    //
+    //  For example, using a single protocol for Tx is achieved like this:
     //
     //    Parameters parameters;
     //    parameters.operatingMode = GGWAVE_OPERATING_MODE_TX;