diff --git a/CMakeLists.txt b/CMakeLists.txt
index 449970cf0..c179a0afe 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,9 +23,9 @@ if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
 endif()
 string(TOUPPER "${CMAKE_BUILD_TYPE}" U_CMAKE_BUILD_TYPE)
 
-set(Python_ADDITIONAL_VERSIONS 3.6 3.5 3.4 3.3 3.2)
+set(Python_ADDITIONAL_VERSIONS 3.4 3.5 3.6)
 find_package(PythonLibs ${PYBIND11_PYTHON_VERSION} REQUIRED)
-#find_package(PythonInterp ${PYBIND11_PYTHON_VERSION} REQUIRED)
+find_package(PythonInterp ${PYBIND11_PYTHON_VERSION} REQUIRED)
 
 include(CheckCXXCompilerFlag)
 
diff --git a/example/example2.py b/example/example2.py
index f42ee49bc..74964aacd 100755
--- a/example/example2.py
+++ b/example/example2.py
@@ -1,5 +1,6 @@
 #!/usr/bin/env python
 from __future__ import print_function
+import six
 import sys, pydoc
 sys.path.append('.')
 
@@ -30,11 +31,11 @@ dict_result['key2'] = 'value2'
 instance.print_dict_2(dict_result)
 
 set_result = instance.get_set()
-set_result.add(u'key3')
+set_result.add(six.u('key3'))
 instance.print_set(set_result)
 
 set_result = instance.get_set2()
-set_result.add(u'key3')
+set_result.add(six.u('key3'))
 instance.print_set_2(set_result)
 
 list_result = instance.get_list()