diff --git a/.travis.yml b/.travis.yml
index 8d00e01..c857936 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -18,9 +18,11 @@ matrix:
 install:
   - pip install -U pip
   - pip install tox
+  - pip install pyflakes
   - sudo rm -rf /dev/shm && sudo ln -s /run/shm /dev/shm
 script:
   - tox -e $TOX_ENV
+  - python -m pyflakes.__main__ $(git ls-files | grep -E "^isso/.+.py$" | grep -v "^isso/compat.py")
 notifications:
   irc:
     channels:
diff --git a/Makefile b/Makefile
index ff2a55e..2a44cb3 100644
--- a/Makefile
+++ b/Makefile
@@ -34,9 +34,9 @@ init:
 
 check:
 	@echo "Python 2.x"
-	-@python2 -m pyflakes $(ISSO_PY_SRC)
+	@python2 -m pyflakes $(filter-out isso/compat.py,$(ISSO_PY_SRC))
 	@echo "Python 3.x"
-	-@python3 -m pyflakes $(ISSO_PY_SRC)
+	@python3 -m pyflakes $(filter-out isso/compat.py,$(ISSO_PY_SRC))
 
 isso/js/%.min.js: $(ISSO_JS_SRC) $(ISSO_CSS)
 	$(RJS) -o isso/js/build.$*.js out=$@
diff --git a/isso/__init__.py b/isso/__init__.py
index 7795c4f..0a62290 100644
--- a/isso/__init__.py
+++ b/isso/__init__.py
@@ -220,8 +220,6 @@ def main():
     imprt.add_argument("--empty-id", dest="empty_id", action="store_true",
                        help="workaround for weird Disqus XML exports, #135")
 
-    serve = subparser.add_parser("run", help="run server")
-
     args = parser.parse_args()
     conf = config.load(join(dist.location, dist.project_name, "defaults.ini"), args.conf)
 
diff --git a/isso/utils/http.py b/isso/utils/http.py
index 48b968b..4bbf443 100644
--- a/isso/utils/http.py
+++ b/isso/utils/http.py
@@ -44,7 +44,7 @@ class curl(object):
             self.con = http(host, port, timeout=self.timeout)
             try:
                 self.con.request(self.method, self.path, headers=self.headers)
-            except (httplib.HTTPException, socket.error) as e:
+            except (httplib.HTTPException, socket.error):
                 return None
 
             try: