diff --git a/trello/compat.py b/trello/compat.py
index e11e21bc..638e1320 100644
--- a/trello/compat.py
+++ b/trello/compat.py
@@ -1,6 +1,6 @@
 import sys
 
-PY2 = sys.version_info > (3, 0)
+PY2 = sys.version_info < (3, 0)
 
 
 def force_str(s, encoding='utf-8'):