diff --git a/src/gamedata/mod.rs b/src/gamedata/mod.rs
index 444ea2f..83f8bcf 100644
--- a/src/gamedata/mod.rs
+++ b/src/gamedata/mod.rs
@@ -43,11 +43,9 @@ impl Board {
     }
 }
 
-#[derive(Clone)]
+#[derive(Clone, Debug)]
 pub enum Disk {
     RED,
     BLUE,
     EMPTY,
 }
-
-