diff --git a/tests/api/test_dnf_base.py b/tests/api/test_dnf_base.py
index b1cf49f..ca71b75 100644
--- a/tests/api/test_dnf_base.py
+++ b/tests/api/test_dnf_base.py
@@ -14,6 +14,7 @@ from .common import TOUR_4_4
 class DnfBaseApiTest(TestCase):
     def setUp(self):
         self.base = dnf.Base(dnf.conf.Conf())
+        self.base.conf.persistdir = "/tmp/tests"
 
     def tearDown(self):
         self.base.close()
diff --git a/tests/api/test_dnf_db_group.py b/tests/api/test_dnf_db_group.py
index 447fd12..e1828cb 100644
--- a/tests/api/test_dnf_db_group.py
+++ b/tests/api/test_dnf_db_group.py
@@ -12,6 +12,7 @@ from .common import TestCase
 class DnfRPMTransactionApiTest(TestCase):
     def setUp(self):
         self.base = dnf.Base(dnf.conf.Conf())
+        self.base.conf.persistdir = "/tmp/tests"
         self.base.fill_sack(False, False)
         self.base.resolve()
         self.rpmTrans = self.base.transaction