diff --git a/board/src/bitboard/mod.rs b/board/src/bitboard/mod.rs
index 238f6ac..c417abd 100644
--- a/board/src/bitboard/mod.rs
+++ b/board/src/bitboard/mod.rs
@@ -8,7 +8,7 @@ pub(crate) use bitboard::{BitBoard, BitBoardBuilder};
 
 #[macro_export]
 macro_rules! bitboard {
-    ($($sq:ident),*) => {
+    ($($sq:ident),* $(,)?) => {
         $crate::bitboard::BitBoardBuilder::empty()
             $(.square($crate::Square::$sq))*
             .build()