diff --git a/httpie/compat.py b/httpie/compat.py
index d78d94f3..2e9e3291 100644
--- a/httpie/compat.py
+++ b/httpie/compat.py
@@ -5,13 +5,11 @@ Python 2.6, 2.7, and 3.x compatibility.
 import sys
 
 
-# Taken from `requests.compat`
-_ver = sys.version_info
-is_py2 = (_ver[0] == 2)
-is_py26 = (is_py2 and _ver[1] == 6)
-is_py27 = (is_py2 and _ver[1] == 7)
-is_py3 = (_ver[0] == 3)
-is_pypy = ('pypy' in _ver)
+is_py2 = sys.version_info[0] == 2
+is_py26 = sys.version_info[:2] == (2, 6)
+is_py27 = sys.version_info[:2] == (2, 7)
+is_py3 = sys.version_info[0] == 3
+is_pypy = 'pypy' in sys.version.lower()
 is_windows = 'win32' in str(sys.platform).lower()