diff --git a/tools/jsonToRst.py b/tools/jsonToRst.py
index 4fc3d4cc..b6eca323 100755
--- a/tools/jsonToRst.py
+++ b/tools/jsonToRst.py
@@ -31,6 +31,7 @@ def printHelpArrays(input):
 
     return output[0:-2]
 
+
 wrapper = textwrap.TextWrapper(width=79, subsequent_indent='  ')
 
 inFileName = "NONE"
diff --git a/tox.ini b/tox.ini
index 5bbacbd7..333786e4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -23,6 +23,7 @@ commands=
 [testenv:pep8]
 basepython = python2.7
 deps =
+  flake8
   {[testenv]deps}
 commands=
   bash tools/flake8wrap.sh
diff --git a/working_materials/find_additional_properties.py b/working_materials/find_additional_properties.py
old mode 100644
new mode 100755
index 954d0622..6d9e89c3
--- a/working_materials/find_additional_properties.py
+++ b/working_materials/find_additional_properties.py
@@ -45,7 +45,7 @@ def show_outcome(stream, test):
     global RESULTS
     status = test['status']
     if status == 'exists':
-        returnmime
+        return
     if status == 'fail':
         for raw_name in test['details']:
             name = raw_name.split(':')[0]
@@ -73,6 +73,7 @@ def show_outcome(stream, test):
     elif status == 'skip':
         SKIPS.append(test)
 
+
 stream = subunit.ByteStreamToStreamResult(
     sys.stdin, non_subunit_name='stdout')
 outcome = testtools.StreamToDict(
diff --git a/working_materials/tabulate_scores.py b/working_materials/tabulate_scores.py
index cd3584ef..1337b00f 100755
--- a/working_materials/tabulate_scores.py
+++ b/working_materials/tabulate_scores.py
@@ -26,6 +26,7 @@ class CustomFormatter(argparse.ArgumentDefaultsHelpFormatter,
                       argparse.RawDescriptionHelpFormatter):
     pass
 
+
 # Set up command line arguments.
 parser = argparse.ArgumentParser(
     description=textwrap.dedent("""\