diff --git a/.travis.yml b/.travis.yml
index 491b04b..873d9f2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -31,7 +31,7 @@ install:
 
 script:
   - coverage erase
-  - if [[ $(python -c 'import sys; print("0" if sys.version_info < (2, 7) else "1")') == "1" ]]; then flake8 --ignore=E501; fi
+  - if [[ $(python -c 'import sys; print("0" if sys.version_info < (2, 7) else "1")') == "1" ]]; then flake8 --ignore=E501,W605; fi
   - PYTHONPATH=. coverage run -p example/run_tests.py
   - PYTHONPATH=. coverage run -p example/run_tests.py example.settings_no_debug
 after_success:
@@ -42,3 +42,4 @@ notifications:
   email:
     - goinnn@gmail.com
     - blag@users.noreply.github.com
+    - tomasgarzonhervas@gmail.com
diff --git a/multiselectfield/db/fields.py b/multiselectfield/db/fields.py
index bd6ada2..0fd8966 100644
--- a/multiselectfield/db/fields.py
+++ b/multiselectfield/db/fields.py
@@ -55,8 +55,8 @@ class MSFList(list):
         super(MSFList, self).__init__(*args, **kwargs)
 
     def __str__(msgl):
-        list = [msgl.choices.get(int(i)) if i.isdigit() else msgl.choices.get(i) for i in msgl]
-        return u', '.join([string_type(s) for s in list])
+        msg_list = [msgl.choices.get(int(i)) if i.isdigit() else msgl.choices.get(i) for i in msgl]
+        return u', '.join([string_type(s) for s in msg_list])
 
 
 class MultiSelectField(models.CharField):
@@ -74,7 +74,7 @@ class MultiSelectField(models.CharField):
             self.validators.append(MaxChoicesValidator(self.max_choices))
 
     def _get_flatchoices(self):
-        choices = super(MultiSelectField, self)._get_flatchoices()
+        flat_choices = super(MultiSelectField, self)._get_flatchoices()
 
         class MSFFlatchoices(list):
             # Used to trick django.contrib.admin.utils.display_for_field into
@@ -83,7 +83,7 @@ class MultiSelectField(models.CharField):
             def __bool__(self):
                 return False
             __nonzero__ = __bool__
-        return MSFFlatchoices(choices)
+        return MSFFlatchoices(flat_choices)
     flatchoices = property(_get_flatchoices)
 
     def get_choices_default(self):
diff --git a/tox.ini b/tox.ini
index 08b8f0b..df70693 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,7 +6,7 @@ usedevelop = True
 setenv =
     PYTHONPATH=.
 commands =
-    python {envbindir}/flake8 --ignore=E501
+    python {envbindir}/flake8 --ignore=E501,W605
     python {envbindir}/coverage run -p example/run_tests.py
     python {envbindir}/coverage run -p example/run_tests.py example.settings_no_debug
 install_command =