diff --git a/README.md b/README.md
index 1e506d7..7309300 100644
--- a/README.md
+++ b/README.md
@@ -16,9 +16,9 @@ classDiagram
     Board : insertPieceIntoColumn(col, playerId)
 
     class Rules
-    Rules : name
-    Rules : nbrow
-    Rules : nbcol
+    Rules : string name
+    Rules : int nbrow
+    Rules : int nbcol
     Rules : checkBoardSize(board) bool
     Rules : isFull(board) bool
     Rules : _checkHorizontalLines(board, row, col) bool, id, winningCell