diff --git a/libmproxy/flow.py b/libmproxy/flow.py
index 9b083036d..8e4db57d6 100644
--- a/libmproxy/flow.py
+++ b/libmproxy/flow.py
@@ -390,7 +390,9 @@ class FlowMaster(controller.Master):
         self.stickycookie_state = False
 
     def _runscript(self, f, script):
-        return f.run_script(script)
+        #begin nocover
+        raise NotImplementedError
+        #end nocover
 
     def set_response_script(self, s):
         self.scripts["response"] = s
diff --git a/libmproxy/utils.py b/libmproxy/utils.py
index c67b93979..d4b72cb61 100644
--- a/libmproxy/utils.py
+++ b/libmproxy/utils.py
@@ -434,13 +434,3 @@ def dummy_cert(certdir, ca, commonname):
         )
         if ret: return None
     return certpath
-
-
-def mkdir_p(path):
-    try:
-        os.makedirs(path)
-    except OSError as exc:
-        if exc.errno == errno.EEXIST:
-            pass
-        else:
-            raise
diff --git a/mitmproxy b/mitmproxy
index 7c70fb446..85e8679e4 100755
--- a/mitmproxy
+++ b/mitmproxy
@@ -71,11 +71,6 @@ if __name__ == '__main__':
                         "Recorder",
                         "Options controlling recorder behavior"
                     )
-    group.add_option(
-        "-w", "--store", action="store",
-        type = "str", dest="cache", default=None,
-        help = "Session store location"
-    )
     group.add_option(
         "-C", "--cookies", action="append",
         type = "str", dest="cookies", default=[],
@@ -86,14 +81,6 @@ if __name__ == '__main__':
     options, args = parser.parse_args()
 
 
-    if options.cache is not None:
-        options.cache = os.path.expanduser(options.cache)
-    if options.cache is not None:
-        utils.mkdir_p(options.cache)
-        if os.path.exists(options.cache + "/index.txt"):
-            print >> sys.stderr, "ERROR: data already recorded in %s"%options.cache
-            sys.exit(1)
-
     config = proxy.process_certificate_option_group(parser, options)
     server = proxy.ProxyServer(config, options.port, options.addr)
     m = console.ConsoleMaster(server, options)
diff --git a/test/test_utils.py b/test/test_utils.py
index f65c1ea73..be6db4d39 100644
--- a/test/test_utils.py
+++ b/test/test_utils.py
@@ -310,10 +310,7 @@ class udummy_cert(libpry.AutoTree):
         assert os.path.exists(os.path.join(d, "foo.com.pem"))
 
 
-        
 
-
-    
 tests = [
     uformat_timestamp(),
     uisBin(),