diff --git a/README.md b/README.md
index 2dd0ed2..04fb14d 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@ void loop() {
   unsigned long m = millis();
   if(m - secondsTimer > 1000L){
     secondsTimer = m;
-    mppt.ping();  // send oing every second
+    mppt.ping();  // send ping every second
   }
 }