diff --git a/app/src/main/java/chess/io/Command.java b/app/src/main/java/chess/io/Command.java
index 717e3c0..38288b8 100644
--- a/app/src/main/java/chess/io/Command.java
+++ b/app/src/main/java/chess/io/Command.java
@@ -3,5 +3,10 @@ package chess.io;
 import chess.model.Game;
 
 public abstract class Command {
+
+	public enum CommandResult {
+		Moved, NotMoved, NotAllowed;
+	}
+
 	public abstract CommandResult execute(Game game, OutputSystem outputSystem);
 }
diff --git a/app/src/main/java/chess/io/CommandExecutor.java b/app/src/main/java/chess/io/CommandExecutor.java
index a8f4f98..9db17c5 100644
--- a/app/src/main/java/chess/io/CommandExecutor.java
+++ b/app/src/main/java/chess/io/CommandExecutor.java
@@ -1,5 +1,6 @@
 package chess.io;
 
+import chess.io.Command.CommandResult;
 import chess.io.commands.MoveCommand;
 import chess.model.Game;
 import chess.model.Game.GameStatus;
diff --git a/app/src/main/java/chess/io/CommandResult.java b/app/src/main/java/chess/io/CommandResult.java
deleted file mode 100644
index 8eb6b85..0000000
--- a/app/src/main/java/chess/io/CommandResult.java
+++ /dev/null
@@ -1,5 +0,0 @@
-package chess.io;
-
-public enum CommandResult {
-	Moved, NotMoved, NotAllowed;
-}
diff --git a/app/src/main/java/chess/io/commands/CastlingCommand.java b/app/src/main/java/chess/io/commands/CastlingCommand.java
index 9dcfc71..132c76b 100644
--- a/app/src/main/java/chess/io/commands/CastlingCommand.java
+++ b/app/src/main/java/chess/io/commands/CastlingCommand.java
@@ -1,6 +1,5 @@
 package chess.io.commands;
 
-import chess.io.CommandResult;
 import chess.io.OutputSystem;
 import chess.io.PlayerCommand;
 import chess.model.Game;
diff --git a/app/src/main/java/chess/io/commands/GetAllowedMovesCommand.java b/app/src/main/java/chess/io/commands/GetAllowedMovesCommand.java
index ec74723..8e308ea 100644
--- a/app/src/main/java/chess/io/commands/GetAllowedMovesCommand.java
+++ b/app/src/main/java/chess/io/commands/GetAllowedMovesCommand.java
@@ -4,7 +4,6 @@ import java.util.ArrayList;
 import java.util.List;
 
 import chess.io.Command;
-import chess.io.CommandResult;
 import chess.io.OutputSystem;
 import chess.model.ChessBoard;
 import chess.model.Coordinate;
diff --git a/app/src/main/java/chess/io/commands/GetPieceAtCommand.java b/app/src/main/java/chess/io/commands/GetPieceAtCommand.java
index d248261..112e362 100644
--- a/app/src/main/java/chess/io/commands/GetPieceAtCommand.java
+++ b/app/src/main/java/chess/io/commands/GetPieceAtCommand.java
@@ -1,7 +1,6 @@
 package chess.io.commands;
 
 import chess.io.Command;
-import chess.io.CommandResult;
 import chess.io.OutputSystem;
 import chess.model.Coordinate;
 import chess.model.Game;
diff --git a/app/src/main/java/chess/io/commands/GrandCastlingCommand.java b/app/src/main/java/chess/io/commands/GrandCastlingCommand.java
index 5953918..12e9a31 100644
--- a/app/src/main/java/chess/io/commands/GrandCastlingCommand.java
+++ b/app/src/main/java/chess/io/commands/GrandCastlingCommand.java
@@ -1,6 +1,5 @@
 package chess.io.commands;
 
-import chess.io.CommandResult;
 import chess.io.OutputSystem;
 import chess.io.PlayerCommand;
 import chess.model.Game;
diff --git a/app/src/main/java/chess/io/commands/MoveCommand.java b/app/src/main/java/chess/io/commands/MoveCommand.java
index b914890..c8249e9 100644
--- a/app/src/main/java/chess/io/commands/MoveCommand.java
+++ b/app/src/main/java/chess/io/commands/MoveCommand.java
@@ -1,6 +1,5 @@
 package chess.io.commands;
 
-import chess.io.CommandResult;
 import chess.io.OutputSystem;
 import chess.io.PlayerCommand;
 import chess.model.ChessBoard;
diff --git a/app/src/main/java/chess/io/commands/NewGameCommand.java b/app/src/main/java/chess/io/commands/NewGameCommand.java
index f060212..166aa5b 100644
--- a/app/src/main/java/chess/io/commands/NewGameCommand.java
+++ b/app/src/main/java/chess/io/commands/NewGameCommand.java
@@ -1,7 +1,6 @@
 package chess.io.commands;
 
 import chess.io.Command;
-import chess.io.CommandResult;
 import chess.io.OutputSystem;
 import chess.model.ChessBoard;
 import chess.model.Color;
diff --git a/app/src/main/java/chess/io/commands/PromoteCommand.java b/app/src/main/java/chess/io/commands/PromoteCommand.java
index f19c5f9..47cd382 100644
--- a/app/src/main/java/chess/io/commands/PromoteCommand.java
+++ b/app/src/main/java/chess/io/commands/PromoteCommand.java
@@ -1,6 +1,5 @@
 package chess.io.commands;
 
-import chess.io.CommandResult;
 import chess.io.OutputSystem;
 import chess.io.PlayerCommand;
 import chess.model.ChessBoard;
diff --git a/app/src/main/java/chess/io/commands/SurrenderCommand.java b/app/src/main/java/chess/io/commands/SurrenderCommand.java
index 3aa73b4..b8a6761 100644
--- a/app/src/main/java/chess/io/commands/SurrenderCommand.java
+++ b/app/src/main/java/chess/io/commands/SurrenderCommand.java
@@ -1,7 +1,6 @@
 package chess.io.commands;
 
 import chess.io.Command;
-import chess.io.CommandResult;
 import chess.io.OutputSystem;
 import chess.model.Color;
 import chess.model.Game;
diff --git a/app/src/main/java/chess/io/commands/UndoCommand.java b/app/src/main/java/chess/io/commands/UndoCommand.java
index 6db33ad..e648e99 100644
--- a/app/src/main/java/chess/io/commands/UndoCommand.java
+++ b/app/src/main/java/chess/io/commands/UndoCommand.java
@@ -1,7 +1,6 @@
 package chess.io.commands;
 
 import chess.io.Command;
-import chess.io.CommandResult;
 import chess.io.OutputSystem;
 import chess.model.Game;
 
diff --git a/app/src/main/java/chess/simplerender/Window.java b/app/src/main/java/chess/simplerender/Window.java
index 0bd04be..0dac115 100644
--- a/app/src/main/java/chess/simplerender/Window.java
+++ b/app/src/main/java/chess/simplerender/Window.java
@@ -13,8 +13,8 @@ import javax.swing.JPanel;
 import javax.swing.SwingUtilities;
 
 import chess.io.Command;
+import chess.io.Command.CommandResult;
 import chess.io.CommandExecutor;
-import chess.io.CommandResult;
 import chess.io.OutputSystem;
 import chess.io.commands.GetAllowedMovesCommand;
 import chess.io.commands.GetPieceAtCommand;