diff --git a/tests/hghave.py b/tests/hghave.py
--- a/tests/hghave.py
+++ b/tests/hghave.py
@@ -320,6 +320,11 @@ def has_ssl():
     except ImportError:
         return False
 
+@check("defaultcacerts", "can verify SSL certs by system's CA certs store")
+def has_defaultcacerts():
+    from mercurial import sslutil
+    return sslutil._defaultcacerts()
+
 @check("windows", "Windows")
 def has_windows():
     return os.name == 'nt'
diff --git a/tests/test-https.t b/tests/test-https.t
--- a/tests/test-https.t
+++ b/tests/test-https.t
@@ -119,7 +119,7 @@ OS X has a dummy CA cert that enables us
 Apple's OpenSSL. This trick do not work with plain OpenSSL.
 
   $ DISABLEOSXDUMMYCERT=
-#if osx
+#if defaultcacerts
   $ hg clone https://localhost:$HGPORT/ copy-pull
   abort: error: *certificate verify failed* (glob)
   [255]