diff --git a/tests/test_all.py b/tests/test_all.py
index 41aefc4..dd00323 100755
--- a/tests/test_all.py
+++ b/tests/test_all.py
@@ -569,7 +569,10 @@ def cb(result, errorno):
         # try encoding it as utf-8
         self.channel.query(host.encode(), pycares.QUERY_TYPE_A, cb)
         self.wait()
-        self.assertEqual(self.errorno, pycares.errno.ARES_ENOTFOUND)
+        # ARES_EBADNAME correct for c-ares 1.24 and ARES_ENOTFOUND for 1.18
+        if self.errorno == pycares.errno.ARES_ENOTFOUND:
+            self.errorno = pycares.errno.ARES_EBADNAME
+        self.assertEqual(self.errorno, pycares.errno.ARES_EBADNAME)
         self.assertEqual(self.result, None)
         # use it as is (it's IDNA encoded internally)
         self.channel.query(host, pycares.QUERY_TYPE_A, cb)