diff --git a/ci/appveyor/appveyor_install.bat b/ci/appveyor/appveyor_install.bat
index 33c78072..50f942aa 100755
--- a/ci/appveyor/appveyor_install.bat
+++ b/ci/appveyor/appveyor_install.bat
@@ -18,5 +18,6 @@ python --version
 
 appveyor DownloadFile https://bootstrap.pypa.io/get-pip.py
 python get-pip.py
+del get-pip.py
 pip install -r python\test_requirements.txt
 if %errorlevel% neq 0 exit /b %errorlevel%
diff --git a/install.py b/install.py
index 0783219f..96d3bda3 100755
--- a/install.py
+++ b/install.py
@@ -43,9 +43,10 @@ def Main():
   old_libs = (
     glob.glob( p.join( DIR_OF_OLD_LIBS, '*ycm_core.*' ) ) +
     glob.glob( p.join( DIR_OF_OLD_LIBS, '*ycm_client_support.*' ) ) +
-    glob.glob( p.join( DIR_OF_OLD_LIBS, '*clang*.*') ) )
+    glob.glob( p.join( DIR_OF_OLD_LIBS, '*clang*.*' ) ) )
   for lib in old_libs:
     os.remove( lib )
 
+
 if __name__ == "__main__":
   Main()
diff --git a/run_tests.py b/run_tests.py
index 618b6302..68b37e27 100755
--- a/run_tests.py
+++ b/run_tests.py
@@ -3,6 +3,7 @@
 import os
 import subprocess
 import os.path as p
+import glob
 import sys
 
 DIR_OF_THIS_SCRIPT = p.dirname( p.abspath( __file__ ) )
@@ -37,9 +38,13 @@ import argparse
 
 def RunFlake8():
   print( 'Running flake8' )
-  subprocess.check_call( [
-    sys.executable, '-m', 'flake8', p.join( DIR_OF_THIS_SCRIPT, 'python' )
-  ] )
+  args = [ sys.executable,
+           '-m',
+           'flake8',
+           p.join( DIR_OF_THIS_SCRIPT, 'python' ) ]
+  root_dir_scripts = glob.glob( p.join( DIR_OF_THIS_SCRIPT, '*.py' ) )
+  args.extend( root_dir_scripts )
+  subprocess.check_call( args )
 
 
 def ParseArguments():
@@ -93,5 +98,6 @@ def Main():
   BuildYcmdLibs( parsed_args )
   NoseTests( parsed_args, nosetests_args )
 
+
 if __name__ == "__main__":
   Main()