diff --git a/tests/testlib.py b/tests/testlib.py
index 15016964..e9104000 100644
--- a/tests/testlib.py
+++ b/tests/testlib.py
@@ -172,11 +172,11 @@ def _have_cmd(args):
 
 
 def have_python2():
-    return _have_cmd(['python2'])
+    return _have_cmd(['python2', '--version'])
 
 
 def have_python3():
-    return _have_cmd(['python3'])
+    return _have_cmd(['python3', '--version'])
 
 
 def have_sudo_nopassword():