diff --git a/IPython/core/tests/test_compilerop.py b/IPython/core/tests/test_compilerop.py
index ac9cb9e..89c0672 100644
--- a/IPython/core/tests/test_compilerop.py
+++ b/IPython/core/tests/test_compilerop.py
@@ -51,7 +51,7 @@ def test_cache():
 def setUp():
     # Check we're in a proper Python 2 environment (some imports, such
     # as GTK, can change the default encoding, which can hide bugs.)
-    nt.assert_equal(sys.getdefaultencoding(), "utf-8" if py3compat.PY3 else "ascii")
+    nt.assert_equal(sys.getdefaultencoding(), "utf-8")
 
 def test_cache_unicode():
     cp = compilerop.CachingCompiler()
diff --git a/IPython/core/tests/test_oinspect.py b/IPython/core/tests/test_oinspect.py
index 04b59ac..2593e33 100644
--- a/IPython/core/tests/test_oinspect.py
+++ b/IPython/core/tests/test_oinspect.py
@@ -227,8 +227,7 @@ def test_info():
     nt.assert_equal(i['docstring'], Call.__doc__)
     nt.assert_equal(i['source'], None)
     nt.assert_true(i['isclass'])
-    _self_py2 = '' if py3compat.PY3 else 'self, '
-    nt.assert_equal(i['init_definition'], "Call(%sx, y=1)" % _self_py2)
+    nt.assert_equal(i['init_definition'], "Call(x, y=1)")
     nt.assert_equal(i['init_docstring'], Call.__init__.__doc__)
 
     i = inspector.info(Call, detail_level=1)