diff --git a/test/test_perft.py b/test/test_perft.py
index 55aa2e5..8887e1c 100644
--- a/test/test_perft.py
+++ b/test/test_perft.py
@@ -1,12 +1,12 @@
 from test.base import ChessLibTestBase
-from test.chess_ffi import Board
-from test.chess_ffi import perft
+from binding.python_c_ffi import Board
 
 
 class TestPerftQuick(ChessLibTestBase):
     def test_perft_1(self):
         b = Board()
-        self.load_fen("rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1", board=b)
+        fen = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"
+        self.chess_ffi.load_fen(b, fen)
         node_count = {
             1: 20,
             2: 400,
@@ -15,13 +15,14 @@ class TestPerftQuick(ChessLibTestBase):
             5: 4865609,
         }
         for node, count  in node_count.items():
-            actual = int(perft(b, node))
+            actual = int(self.chess_ffi._c_perft(b, node))
             self.assertEqual(count, actual, f"perft({node}) start pos")
 
 
     def test_perft_2(self):
         b = Board()
-        self.load_fen("r3k2r/p1ppqpb1/bn2pnp1/3PN3/1p2P3/2N2Q1p/PPPBBPPP/R3K2R w KQkq - 0 1", board=b)
+        fen = "r3k2r/p1ppqpb1/bn2pnp1/3PN3/1p2P3/2N2Q1p/PPPBBPPP/R3K2R w KQkq - 0 1"
+        self.chess_ffi.load_fen(b, fen)
         node_count = {
             1: 48,
             2: 2039,
@@ -29,13 +30,14 @@ class TestPerftQuick(ChessLibTestBase):
             4: 4085603,
         }
         for node, count  in node_count.items():
-            actual = int(perft(b, node))
+            actual = int(self.chess_ffi._c_perft(b, node))
             self.assertEqual(count, actual, f"perft({node}) start pos")
 
 
     def test_perft_3(self):
         b = Board()
-        self.load_fen("8/2p5/3p4/KP5r/1R3p1k/8/4P1P1/8 w - - 0 1", board=b)
+        fen = "8/2p5/3p4/KP5r/1R3p1k/8/4P1P1/8 w - - 0 1"
+        self.chess_ffi.load_fen(b, fen)
         node_count = {
             1: 14,
             2: 191,
@@ -44,13 +46,14 @@ class TestPerftQuick(ChessLibTestBase):
             5: 674624,
         }
         for node, count  in node_count.items():
-            actual = int(perft(b, node))
+            actual = int(self.chess_ffi._c_perft(b, node))
             self.assertEqual(count, actual, f"perft({node}) start pos")
 
 
     def test_perft_4(self):
         b = Board()
-        self.load_fen("r3k2r/Pppp1ppp/1b3nbN/nP6/BBP1P3/q4N2/Pp1P2PP/R2Q1RK1 w kq - 0 1", board=b)
+        fen = "r3k2r/Pppp1ppp/1b3nbN/nP6/BBP1P3/q4N2/Pp1P2PP/R2Q1RK1 w kq - 0 1"
+        self.chess_ffi.load_fen(b, fen)
         node_count = {
             1: 6,
             2: 264,
@@ -58,13 +61,14 @@ class TestPerftQuick(ChessLibTestBase):
             4: 422333,
         }
         for node, count  in node_count.items():
-            actual = int(perft(b, node))
+            actual = int(self.chess_ffi._c_perft(b, node))
             self.assertEqual(count, actual, f"perft({node}) start pos")
 
 
     def test_perft_5(self):
         b = Board()
-        self.load_fen("rnbq1k1r/pp1Pbppp/2p5/8/2B5/8/PPP1NnPP/RNBQK2R w KQ - 1 8  ", board=b)
+        fen = "rnbq1k1r/pp1Pbppp/2p5/8/2B5/8/PPP1NnPP/RNBQK2R w KQ - 1 8"
+        self.chess_ffi.load_fen(b, fen)
         node_count = {
             1: 44,
             2: 1486,
@@ -72,13 +76,14 @@ class TestPerftQuick(ChessLibTestBase):
             4: 2103487,
         }
         for node, count  in node_count.items():
-            actual = int(perft(b, node))
+            actual = int(self.chess_ffi._c_perft(b, node))
             self.assertEqual(count, actual, f"perft({node}) start pos")
 
 
     def test_perft_6(self):
         b = Board()
-        self.load_fen("r4rk1/1pp1qppp/p1np1n2/2b1p1B1/2B1P1b1/P1NP1N2/1PP1QPPP/R4RK1 w - - 0 10 ", board=b)
+        fen = "r4rk1/1pp1qppp/p1np1n2/2b1p1B1/2B1P1b1/P1NP1N2/1PP1QPPP/R4RK1 w - - 0 10"
+        self.chess_ffi.load_fen(b, fen)
         node_count = {
             1: 46,
             2: 2079,
@@ -86,5 +91,5 @@ class TestPerftQuick(ChessLibTestBase):
             4: 3894594,
         }
         for node, count  in node_count.items():
-            actual = int(perft(b, node))
+            actual = int(self.chess_ffi._c_perft(b, node))
             self.assertEqual(count, actual, f"perft({node}) start pos")
\ No newline at end of file