diff --git a/moves/src/builder.rs b/moves/src/builder.rs
index 780ed73..e8144a1 100644
--- a/moves/src/builder.rs
+++ b/moves/src/builder.rs
@@ -31,43 +31,45 @@ pub trait Style {
     }
 }
 
-#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+#[derive(Clone, Debug, Eq, PartialEq)]
 pub struct Builder<S: Style> {
     style: S,
 }
 
-#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+#[derive(Clone, Debug, Eq, PartialEq)]
 pub struct Null;
 
-#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+#[derive(Clone, Debug, Eq, PartialEq)]
 pub struct Push {
     from: Option<Square>,
     to: Option<Square>,
 }
 
-#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+#[derive(Clone, Debug, Eq, PartialEq)]
 pub struct DoublePush {
     from: Square,
     to: Square,
 }
 
-#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+#[derive(Clone, Debug, Eq, PartialEq)]
 pub struct Capture {
     push: Push,
     capture: Option<Square>,
 }
 
-#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+#[derive(Clone, Debug, Eq, PartialEq)]
 pub struct EnPassantCapture {
     push: Push,
     capture: Option<Square>,
 }
 
+#[derive(Clone, Debug, Eq, PartialEq)]
 pub struct Promotion<S> {
     style: S,
     promotion: PromotionShape,
 }
 
+#[derive(Clone, Debug, Eq, PartialEq)]
 pub struct Castle {
     castle: castle::Castle,
 }