diff --git a/satpy/tests/reader_tests/conftest.py b/satpy/tests/reader_tests/conftest.py
index 241f00f28f..cfee6d4523 100644
--- a/satpy/tests/reader_tests/conftest.py
+++ b/satpy/tests/reader_tests/conftest.py
@@ -20,7 +20,6 @@
 
 import datetime as dt
 import os
-from datetime import timedelta
 from random import randrange
 
 import numpy as np
@@ -46,7 +45,7 @@ def random_date(start, end):
     delta = end - start
     int_delta = (delta.days * 24 * 60 * 60) + delta.seconds
     random_second = randrange(int_delta)
-    return start + timedelta(seconds=random_second)
+    return start + dt.timedelta(seconds=random_second)
 
 
 @pytest.fixture(scope="session")