diff --git a/rbackup/struct/hierarchy.py b/rbackup/struct/hierarchy.py
index 88069af..2db8d30 100644
--- a/rbackup/struct/hierarchy.py
+++ b/rbackup/struct/hierarchy.py
@@ -128,10 +128,3 @@ class Hierarchy(PathLike):
             json.dump(attr, mfile)
 
         tmpfile.rename(self.metadata_path)
-
-
-# ========== Functions ==========
-if __name__ == "__main__":
-    import doctest
-
-    doctest.testmod()
diff --git a/tests/test_hierarchy.py b/tests/test_hierarchy.py
index 283845b..03bf859 100644
--- a/tests/test_hierarchy.py
+++ b/tests/test_hierarchy.py
@@ -7,13 +7,8 @@ from pathlib import Path
 from rbackup.struct.hierarchy import Hierarchy
 
 # ========== Constants ==========
-TESTING_MODULE = "rbackup.struct.struct"
-
-
-# ========== Functions ==========
-def load_tests(loader, tests, ignore):
-    tests.addTests(doctest.DocTestSuite(TESTING_MODULE))
-    return tests
+TESTING_PACKAGE = "rbackup.struct"
+TESTING_MODULE = f"{TESTING_PACKAGE}.hierarchy"
 
 
 # ========== Tests ==========
diff --git a/tests/test_packagemanager.py b/tests/test_packagemanager.py
index edeca35..30a64a8 100644
--- a/tests/test_packagemanager.py
+++ b/tests/test_packagemanager.py
@@ -25,12 +25,6 @@ from unittest.mock import patch
 TESTING_MODULE = "rbackup.package_managers.packagemanager"
 
 
-# ========== Functions ==========
-def load_tests(loader, tests, ignore):
-    tests.addTests(doctest.DocTestSuite(TESTING_MODULE))
-    return tests
-
-
 # ========== Test Cases ==========
 class TestCreatePackageManager(unittest.TestCase):
     def setUp(self):
diff --git a/tests/test_snapshot.py b/tests/test_snapshot.py
index eb493f5..edf0670 100644
--- a/tests/test_snapshot.py
+++ b/tests/test_snapshot.py
@@ -12,10 +12,5 @@ from rbackup.struct.snapshot import Snapshot
 TESTING_MODULE = "rbackup.struct.snapshot"
 
 
-# ========== Functions ==========
-def load_tests(loader, tests, ignore):
-    tests.addTests(doctest.DocTestSuite(TESTING_MODULE))
-    return tests
-
 
 # ========== Unit Tests ==========