diff --git a/src/py65/tests/utils/test_console.py b/src/py65/tests/utils/test_console.py
index ac863af..34a1163 100644
--- a/src/py65/tests/utils/test_console.py
+++ b/src/py65/tests/utils/test_console.py
@@ -1,3 +1,4 @@
+import sys
 import unittest
 from py65.utils.console import getch
 
diff --git a/src/py65/tests/utils/test_conversions.py b/src/py65/tests/utils/test_conversions.py
index 4bc7deb..699c755 100644
--- a/src/py65/tests/utils/test_conversions.py
+++ b/src/py65/tests/utils/test_conversions.py
@@ -1,3 +1,4 @@
+import sys
 import unittest
 from py65.utils.conversions import itoa