diff --git a/src/python/futag-package/src/futag/base_generator.py b/src/python/futag-package/src/futag/base_generator.py
index 9c437241..8fb9662c 100644
--- a/src/python/futag-package/src/futag/base_generator.py
+++ b/src/python/futag-package/src/futag/base_generator.py
@@ -27,7 +27,7 @@
 from subprocess import Popen, PIPE
 from multiprocessing import Pool
 from typing import List
-from distutils.dir_util import copy_tree
+from shutil import copytree
 
 from futag.sysmsg import *
 
@@ -2515,8 +2515,8 @@ def compile_targets(self, workers: int = 4, keep_failed: bool = False, extra_par
                 ((self.succeeded_path /
                  dir.parents[1].name)).mkdir(parents=True, exist_ok=True)
             # shutil.move(dir.parents[0].as_posix(), (self.succeeded_path / dir.parents[1].name).as_posix(), copy_function=shutil.copytree)
-            copy_tree(dir.parents[0].as_posix(
-            ), (self.succeeded_path / dir.parents[1].name / dir.parents[0].name).as_posix())
+            copytree(dir.parents[0].as_posix(
+            ), (self.succeeded_path / dir.parents[1].name / dir.parents[0].name).as_posix(), dirs_exist_ok=True)
 
         if keep_failed:
             failed_tree = set()
@@ -2535,8 +2535,8 @@ def compile_targets(self, workers: int = 4, keep_failed: bool = False, extra_par
                         ((self.failed_path /
                           dir.parents[1].name)).mkdir(parents=True, exist_ok=True)
                     # shutil.move(dir.parents[0].as_posix(), (self.failed_path / dir.parents[1].name).as_posix(), copy_function=shutil.copytree)
-                    copy_tree(dir.parents[0].as_posix(
-                    ), (self.failed_path / dir.parents[1].name / dir.parents[0].name).as_posix())
+                    copytree(dir.parents[0].as_posix(
+                    ), (self.failed_path / dir.parents[1].name / dir.parents[0].name).as_posix(), dirs_exist_ok=True)
         else:
             delete_folder(self.failed_path)
         if not keep_original:
diff --git a/src/python/futag-package/src/futag/generator.py b/src/python/futag-package/src/futag/generator.py
index 955ebb20..eac45bf2 100644
--- a/src/python/futag-package/src/futag/generator.py
+++ b/src/python/futag-package/src/futag/generator.py
@@ -26,7 +26,6 @@
 from subprocess import Popen, PIPE
 from multiprocessing import Pool
 from typing import List
-from distutils.dir_util import copy_tree
 
 from futag.sysmsg import *
 from futag.preprocessor import *
diff --git a/src/python/futag-package/tests/test_fuzzer.py b/src/python/futag-package/tests/test_fuzzer.py
index 26962de6..55a2bf4b 100644
--- a/src/python/futag-package/tests/test_fuzzer.py
+++ b/src/python/futag-package/tests/test_fuzzer.py
@@ -49,7 +49,7 @@ def test_quote(self):
 
     def test_newline(self):
         fuzzer = BaseFuzzer.__new__(BaseFuzzer)
-        assert "
" in fuzzer._xml_escape("a\nb")
+        assert "a b" == fuzzer._xml_escape("a\nb")
 
 
 class TestCorpusArgs: