diff --git a/test/test_get_iwconfig.py b/test/test_get_iwconfig.py
new file mode 100644
index 0000000..9836c5f
--- /dev/null
+++ b/test/test_get_iwconfig.py
@@ -0,0 +1,12 @@
+import unittest
+
+
+class TestGetIwconfig(unittest.TestCase):
+    def test_message_when_no_such_device(self):
+        from iwlib import get_iwconfig
+
+        with self.assertRaises(OSError) as context:
+            get_iwconfig('no-such-device')
+
+        self.assertIn("Could not get config for 'no-such-device'",
+                      context.exception.strerror)