diff --git a/game/board.cpp b/game/board.cpp
index 3b257fa..39a4aa5 100644
--- a/game/board.cpp
+++ b/game/board.cpp
@@ -13,7 +13,7 @@ CBoard::CBoard( unsigned int c, unsigned int r )
 
 
 // constructor
-CBoard::CBoard( unsigned int c, unsigned int r, vunitType_c&& b )
+CBoard::CBoard( unsigned int c, unsigned int r, vunitVis_c&& b )
 : cols ( c )
 , rows ( r )
 , total ( rows * cols )
@@ -23,7 +23,7 @@ CBoard::CBoard( unsigned int c, unsigned int r, vunitType_c&& b )
 }
 
 // print get a slot on the board
-unitType_c CBoard::get( const unsigned int c, const unsigned int r ) const
+unitVis_c CBoard::get( const unsigned int c, const unsigned int r ) const
 {
 	if ( (r >= rows) || (c >= cols) )
 		return square_invalid;
@@ -32,12 +32,12 @@ unitType_c CBoard::get( const unsigned int c, const unsigned int r ) const
 }
 
 // Get a square on the board
-unitType_c CBoard::set( const unsigned int c, const unsigned int r , const unitType_c n )
+unitVis_c CBoard::set( const unsigned int c, const unsigned int r , const unitVis_c n )
 {
 	if ( (r >= rows) || (c >= cols) )
 		return square_invalid;
 
-	unitType_c old = board[r*c];
+	unitVis_c old = board[r*c];
 	board[r*c] = n;
 	return old;
 }
\ No newline at end of file
diff --git a/game/board.h b/game/board.h
index 05232cb..ce7236d 100644
--- a/game/board.h
+++ b/game/board.h
@@ -7,11 +7,11 @@
 #include <limits>       // std::numeric_limits
 #include <vector>   	// std::vector
 
-typedef std::vector< unitType_c > vunitType_c;
+typedef std::vector< unitVis_c > vunitVis_c;
 
 // Invalid value for the board square
-constexpr unitType_c square_invalid = std::numeric_limits<unitType_c>::max();
-constexpr unitType_c square_empty = ' ';
+constexpr unitVis_c square_invalid = std::numeric_limits<unitVis_c>::max();
+constexpr unitVis_c square_empty = ' ';
 
 // Class to store simple data about a board
 class CBoard
@@ -26,7 +26,7 @@ public:
 	CBoard( unsigned int c, unsigned int r );
 
 	// constructor
-	CBoard( unsigned int c, unsigned int r, vunitType_c&& b );
+	CBoard( unsigned int c, unsigned int r, vunitVis_c&& b );
 
 	// Default destructor
 	~CBoard() = default;
@@ -35,20 +35,20 @@ public:
 	inline void clear() { fill(square_empty); }
 
 	// fill the board
-	inline void fill(unitType_c v) { std::fill(board.begin(),board.end(),v); };
+	inline void fill(unitVis_c v) { std::fill(board.begin(),board.end(),v); };
 
 	// Get a square on the board
-	unitType_c get( const unsigned int c, const unsigned int r ) const;
+	unitVis_c get( const unsigned int c, const unsigned int r ) const;
 
 	// Get the full board
-	inline const vunitType_c& get() const { return board; };
+	inline const vunitVis_c& get() const { return board; };
 
 	// Get a square on the board
-	unitType_c set( const unsigned int c, const unsigned int r , const unitType_c n );
+	unitVis_c set( const unsigned int c, const unsigned int r , const unitVis_c n );
 
 private:
 
-	vunitType_c board; 	// Board data storage
+	vunitVis_c board; 	// Board data storage
 }; 
 
 #endif //_BOARD_H_
\ No newline at end of file