diff --git a/tests/ports/unix/mod_os.py b/tests/ports/unix/mod_os.py
index f69fa45b2b..468f6badd1 100644
--- a/tests/ports/unix/mod_os.py
+++ b/tests/ports/unix/mod_os.py
@@ -1,6 +1,9 @@
 # This module is not entirely compatible with CPython
 import os
 
+if not hasattr(os, "getenv"):
+    print("SKIP")
+    raise SystemExit
 
 os.putenv("TEST_VARIABLE", "TEST_VALUE")
 
diff --git a/tests/ports/unix/time_mktime_localtime.py b/tests/ports/unix/time_mktime_localtime.py
index d1c03c103d..df5d6cda69 100644
--- a/tests/ports/unix/time_mktime_localtime.py
+++ b/tests/ports/unix/time_mktime_localtime.py
@@ -1,4 +1,8 @@
-import time
+try:
+    import time
+except ImportError:
+    print("SKIP")
+    raise SystemExit
 
 DAYS_PER_MONTH = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]