diff --git a/msgpack/unpack_template.h b/msgpack/unpack_template.h
index 7646896..d34eced 100644
--- a/msgpack/unpack_template.h
+++ b/msgpack/unpack_template.h
@@ -322,7 +322,7 @@ static inline int unpack_execute(unpack_context* ctx, const char* data, size_t l
             case CS_MAP_32:
                 /* FIXME security guard */
                 start_container(_map, _msgpack_load32(uint32_t,n), CT_MAP_KEY);
-            
+
             default:
                 goto _failed;
             }
diff --git a/setup.py b/setup.py
index 83ae79f..1055a61 100644
--- a/setup.py
+++ b/setup.py
@@ -92,7 +92,6 @@ if not hasattr(sys, 'pypy_version_info'):
                                  libraries=libraries,
                                  include_dirs=['.'],
                                  define_macros=macros,
-                                 extra_compile_args=['-O0'],
                                  ))
 del libraries, macros
 
diff --git a/test/test_sequnpack.py b/test/test_sequnpack.py
index af66b78..f541207 100644
--- a/test/test_sequnpack.py
+++ b/test/test_sequnpack.py
@@ -1,10 +1,9 @@
 #!/usr/bin/env python
 # coding: utf-8
 
-import py
 import six
 from msgpack import Unpacker, BufferFull
-from msgpack.exceptions import OutOfData, ExtraData, UnpackValueError
+from msgpack.exceptions import OutOfData
 from pytest import raises