diff --git a/copyparty/broker_mp.py b/copyparty/broker_mp.py
index fe74eaf2..b1da0022 100644
--- a/copyparty/broker_mp.py
+++ b/copyparty/broker_mp.py
@@ -5,9 +5,9 @@ import time
 import threading
 
 from .__init__ import PY2, WINDOWS
+from .broker_util import try_exec
 from .broker_mpw import MpWorker
 from .util import mp
-from .broker_util import *
 
 
 if PY2 and not WINDOWS:
diff --git a/copyparty/broker_mpw.py b/copyparty/broker_mpw.py
index 7aeee01c..b4b540d8 100644
--- a/copyparty/broker_mpw.py
+++ b/copyparty/broker_mpw.py
@@ -7,8 +7,9 @@ import signal
 import threading
 
 from .__init__ import PY2, WINDOWS
+from .broker_util import ExceptionalQueue
 from .httpsrv import HttpSrv
-from .broker_util import *
+from .util import FAKE_MP
 
 if PY2 and not WINDOWS:
     import pickle  # nosec
@@ -30,7 +31,8 @@ class MpWorker(object):
 
         # we inherited signal_handler from parent,
         # replace it with something harmless
-        signal.signal(signal.SIGINT, self.signal_handler)
+        if not FAKE_MP:
+            signal.signal(signal.SIGINT, self.signal_handler)
 
         # instantiate all services here (TODO: inheritance?)
         self.httpsrv = HttpSrv(self)
diff --git a/copyparty/broker_thr.py b/copyparty/broker_thr.py
index 5d441799..fd7a30c7 100644
--- a/copyparty/broker_thr.py
+++ b/copyparty/broker_thr.py
@@ -5,7 +5,7 @@ from __future__ import print_function, unicode_literals
 import threading
 
 from .httpsrv import HttpSrv
-from .broker_util import *
+from .broker_util import ExceptionalQueue, try_exec
 
 
 class BrokerThr(object):
diff --git a/copyparty/util.py b/copyparty/util.py
index 27f52f91..d611c9e3 100644
--- a/copyparty/util.py
+++ b/copyparty/util.py
@@ -9,12 +9,17 @@ import hashlib
 import threading
 import subprocess as sp  # nosec
 
-# import multiprocessing.dummy as mp  # noqa: F401
-import multiprocessing as mp  # noqa: F401
-
 from .__init__ import PY2
 from .stolen import surrogateescape
 
+FAKE_MP = False
+
+if FAKE_MP:
+    import multiprocessing.dummy as mp  # noqa: F401
+else:
+    import multiprocessing as mp  # noqa: F401
+
+
 if not PY2:
     from urllib.parse import unquote_to_bytes as unquote
     from urllib.parse import quote_from_bytes as quote
@@ -22,7 +27,6 @@ else:
     from urllib import unquote  # pylint: disable=no-name-in-module
     from urllib import quote  # pylint: disable=no-name-in-module
 
-
 surrogateescape.register_surrogateescape()
 FS_ENCODING = sys.getfilesystemencoding()