---
 src/twisted/conch/test/test_ckeygen.py |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/src/twisted/conch/test/test_ckeygen.py
+++ b/src/twisted/conch/test/test_ckeygen.py
@@ -73,7 +73,7 @@ class KeyGenTests(TestCase):
 
     def _testrun(self, keyType, keySize=None, privateKeySubtype=None):
         filename = self.mktemp()
-        args = ["ckeygen", "-t", keyType, "-f", filename, "--no-passphrase"]
+        args = ["ckeygen-" + sys.version[:3], "-t", keyType, "-f", filename, "--no-passphrase"]
         if keySize is not None:
             args.extend(["-b", keySize])
         if privateKeySubtype is not None:
@@ -107,7 +107,7 @@ class KeyGenTests(TestCase):
     def test_runBadKeytype(self):
         filename = self.mktemp()
         with self.assertRaises(subprocess.CalledProcessError):
-            subprocess.check_call(["ckeygen", "-t", "foo", "-f", filename])
+            subprocess.check_call(["ckeygen-" + sys.version[:3], "-t", "foo", "-f", filename])
 
     def test_enumrepresentation(self):
         """