diff --git a/src/BleBatteryService.cpp b/src/BleBatteryService.cpp
index 93e33d9..8690afa 100644
--- a/src/BleBatteryService.cpp
+++ b/src/BleBatteryService.cpp
@@ -35,8 +35,8 @@ void BleBatteryService::reportBatteryPercent(uint8_t batPercent) const
     if (!started)
         return;
 
-	batteryCharacteristic->setValue(&batPercent, 1);
-	batteryCharacteristic->notify();
+    batteryCharacteristic->setValue(&batPercent, 1);
+    batteryCharacteristic->notify();
 }
 
 void BleBatteryService::end()