diff --git a/CHANGELOG b/CHANGELOG
index 998fe3be2..b71d226cc 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -6,6 +6,7 @@ Changes between 2.1.1 and [NEXT VERSION]
 - fix issue69 / assertion rewriting fixed on some boolean operations
 - fix issue68 / packages now work with assertion rewriting
 - fix issue66: use different assertion rewriting caches when the -O option is passed
+- don't try assertion rewriting on Jython, use reinterp
 
 Changes between 2.1.0 and 2.1.1
 ----------------------------------------------
diff --git a/_pytest/__init__.py b/_pytest/__init__.py
index 97d05f077..3c8936622 100644
--- a/_pytest/__init__.py
+++ b/_pytest/__init__.py
@@ -1,2 +1,2 @@
 #
-__version__ = '2.1.2.dev1'
+__version__ = '2.1.2.dev2'
diff --git a/_pytest/assertion/__init__.py b/_pytest/assertion/__init__.py
index 381713130..a999b7c15 100644
--- a/_pytest/assertion/__init__.py
+++ b/_pytest/assertion/__init__.py
@@ -38,6 +38,9 @@ def pytest_configure(config):
             import ast
         except ImportError:
             mode = "reinterp"
+        else:
+            if sys.platform.startswith('java'):
+                mode = "reinterp"
     if mode != "plain":
         _load_modules(mode)
         def callbinrepr(op, left, right):
diff --git a/setup.py b/setup.py
index ce058de48..00e5ccfc6 100644
--- a/setup.py
+++ b/setup.py
@@ -24,7 +24,7 @@ def main():
         name='pytest',
         description='py.test: simple powerful testing with Python',
         long_description = long_description,
-        version='2.1.2.dev1',
+        version='2.1.2.dev2',
         url='http://pytest.org',
         license='MIT license',
         platforms=['unix', 'linux', 'osx', 'cygwin', 'win32'],