diff --git a/nacl/nacl.py b/nacl/nacl.py
index 0f2216140c5786d2df1bad6c98601d4cf61d0648..2663a002d6a733c8e83fa0ab0ca876f20c2a1292 100644
--- a/nacl/nacl.py
+++ b/nacl/nacl.py
@@ -5,6 +5,7 @@ from __future__ import absolute_import
 from __future__ import division
 
 import functools
+import platform
 
 from distutils.sysconfig import get_config_vars
 
@@ -21,7 +22,8 @@ __all__ = ["ffi", "lib"]
 def _get_so_suffix():
     return get_config_vars().get("EXT_SUFFIX", ".so")
 
-cffi.verifier._get_so_suffix = _get_so_suffix
+if not platform.python_implementation().lower() == "pypy":
+    cffi.verifier._get_so_suffix = _get_so_suffix
 
 
 ffi = FFI()