diff --git a/sudoku.py b/sudoku.py
index c80ecdd..c2b4bfe 100644
--- a/sudoku.py
+++ b/sudoku.py
@@ -44,7 +44,7 @@ def print_puzzle(clear=True):
             if element != 0:
                 print(element, end=' ')
             else:
-                print('_', end=' ')
+                print('‧', end=' ')
         print()