diff --git a/src/main/java/model/BoardProperties.java b/src/main/java/model/BoardProperties.java
index 67a411c803c628943849f9304dd75f0c61802f6f..f674acb41915152ba9fc72c7b8fd1619199deeae 100644
--- a/src/main/java/model/BoardProperties.java
+++ b/src/main/java/model/BoardProperties.java
@@ -2,4 +2,5 @@ package model;
 
 public interface BoardProperties {
     int rowCount(); // Nombre de lignes.
+    int columnCount(); // Nombre de colonnes.
 }