diff --git a/binding/python_c_ffi.py b/binding/python_c_ffi.py
index 0f32325..5725959 100644
--- a/binding/python_c_ffi.py
+++ b/binding/python_c_ffi.py
@@ -127,20 +127,20 @@ class ChessFFI:
 
     def gen_pseudo_moves(self, board, captures_only=False, cap=256):
         buf = (Move * cap)()
-        n = self._c_gen_pseudo_moves(C.byref(board), buf, captures_only)
+        n = self._c_gen_pseudo_moves(board, buf, captures_only)
         return buf, n
 
 
     def get_legal_moves(self, board, out):
-        return int(self._c_get_legal_moves(board, out))
+        return self._c_get_legal_moves(board, out)
 
 
     def square_attacked(self, board, sq, by):
-        return bool(self._c_square_attacked(C.byref(board), int(sq), int(by)))
+        return self._c_square_attacked(board, sq, by)
 
 
     def in_check(self, board, side):
-        return bool(self._c_in_check(C.byref(board), int(side)))
+        return self._c_in_check(board, side)
 
 
     def attackers_to(self, board, sq, by):