diff --git a/TFTSerial.h b/TFTSerial.h
index 3db1912..23def14 100644
--- a/TFTSerial.h
+++ b/TFTSerial.h
@@ -52,10 +52,10 @@ public:
   virtual void close();
 
 private:
-	const char*       m_callsign;
-	unsigned int      m_dmrid;
-	CSerialController m_serial;
-	unsigned int      m_brightness;
+   const char*       m_callsign;
+   unsigned int      m_dmrid;
+   CSerialController m_serial;
+   unsigned int      m_brightness;
 
   void clearScreen();
   void setBackground(unsigned char colour);