diff --git a/README.md b/README.md
index d57cd69..2c78e2f 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # ATMEGA328PU_lowPower_weather_station
 
-## What is it ?
+## What is it ??
 
 An ATMEGA328PU and NRF24L01+ based weather station operating on a single 18650 li-ion battery (or equivalent) and a solar panel.<br />
 On [this page](/Pages/station.html) is displayed the data collected by this very unit !