     global_state |= STATE_KNOCK;
     digitalWrite(LED2_PIN, 1);
   }
+  else {
+    if (global_debug) {
+      Serial.print("DEBUG Unknown action ");
+      Serial.println(gamearg);
+    }
+    return;
+  }
 
   char *userarg = sCmd.next();
   if (userarg) {

  else if (!strcmp(gamearg, KNOCK_STR)) {
    global_state &= ~STATE_KNOCK;
    digitalWrite(LED2_PIN, 0);
  }

  if (global_debug) {

// Unused
#define LED3_PIN 7

// Currently used for vibration on EXIT knock
#define BUZZER_PIN 8

#define HANDSHAKE_STR "handshake"
#define KNOCK_STR "knock"

