diff --git a/headers/os/device/A2D.h b/headers/os/device/A2D.h
index 180c23b9bd..bf7f3050b0 100644
--- a/headers/os/device/A2D.h
+++ b/headers/os/device/A2D.h
@@ -12,22 +12,22 @@
 
 class BA2D {
 public:
-					BA2D();
-	virtual				~BA2D();
+							BA2D();
+	virtual					~BA2D();
 
-		status_t		Open(const char* portName);
-		void			Close();
-		bool			IsOpen();
+			status_t		Open(const char* portName);
+			void			Close();
+			bool			IsOpen();
 
-		ssize_t			Read(ushort* buf);
+			ssize_t			Read(ushort* buf);
 
 private:
 	virtual	void			_ReservedA2D1();
 	virtual	void			_ReservedA2D2();
 	virtual	void			_ReservedA2D3();
 
-		int			fFd;
-		uint32			_fReserved[3];
+			int				fFd;
+			uint32			_fReserved[3];
 };
 
 #endif // _A2D_H
diff --git a/headers/os/device/D2A.h b/headers/os/device/D2A.h
index 92d433c308..03c4d25118 100644
--- a/headers/os/device/D2A.h
+++ b/headers/os/device/D2A.h
@@ -12,23 +12,23 @@
 
 class BD2A {
 public:
-					BD2A();
-	virtual				~BD2A();
+							BD2A();
+	virtual					~BD2A();
 
-		status_t		Open(const char* portName);
-		void			Close();
-		bool			IsOpen();
+			status_t		Open(const char* portName);
+			void			Close();
+			bool			IsOpen();
 
-		ssize_t			Read(uint8* buf);
-		ssize_t			Write(uint8 value);
+			ssize_t			Read(uint8* buf);
+			ssize_t			Write(uint8 value);
 
 private:
 	virtual	void			_ReservedD2A1();
 	virtual	void			_ReservedD2A2();
 	virtual	void			_ReservedD2A3();
 
-		int			fFd;
-		uint32			_fReserved[3];
+			int				fFd;
+			uint32			_fReserved[3];
 };
 
 #endif //_D2A_H