diff --git a/tests/test_cli.py b/tests/test_cli.py
index <HASH>..<HASH> 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -41,7 +41,6 @@ def find_free_address():
 class TestsCommandLine(unittest.TestCase):
     def _custodia_cli(self, *args):
         env = os.environ.copy()
-        env['PYTHONPATH'] = './'
         pexec = env.get('CUSTODIAPYTHON', sys.executable)
         cli = [
             pexec,
diff --git a/tests/test_custodia.py b/tests/test_custodia.py
index <HASH>..<HASH> 100644
--- a/tests/test_custodia.py
+++ b/tests/test_custodia.py
@@ -176,7 +176,6 @@ class CustodiaTests(unittest.TestCase):
     @classmethod
     def setUpClass(cls):
         env = os.environ.copy()
-        env['PYTHONPATH'] = './'
         cls.pexec = env.get('CUSTODIAPYTHON', sys.executable)
 
         if os.path.isdir(cls.test_dir):
Remove PYTHONPATH from tests

Tests now assume that the caller either uses a tox environment or runs
tests with a correct PYTHONPATH.

Closes: #<I>