1 files changed, 1 insertions, 1 deletions
diff --git a/src/bitboard.c b/src/bitboard.c
index c0abbf8..e53e3ed 100644
--- a/src/bitboard.c
+++ b/src/bitboard.c
@@ -5,7 +5,7 @@
  * (i.e the board is actually flipped along X) */
 void printBitboard(Bitboard bb) {
   for (U64 index = 0; index < 64; index++) {
-    printf("%lu", (bb >> index) & 1);
+    printf("%c", (bb >> index) & 1 ? '1' : '.');
     if ((index + 1) % 8 == 0) printf("\n");
   }
   printf("\n\n");