diff --git a/setup.py b/setup.py
index b738a61..82526c1 100644
--- a/setup.py
+++ b/setup.py
@@ -8,15 +8,15 @@ import sys
 
 version = program_version + '.0'
 
-MODULES = ['numpy']
+MODULES = ['numpy', 'PyQt5']
 
 if system() in ('Windows', 'Darwin'):
-    MODULES.extend(['PyAudio', 'PyQt5'])
+    MODULES.append('PyAudio')
 else:
     try:
         import pyaudio
     except ImportError:
-        MODULES.append('PyAudio')  # TODO: ?
+        MODULES.append('PyAudio')
 
 DEP_LINKS = []
 
diff --git a/toxygen/avwidgets.py b/toxygen/avwidgets.py
index 84f2174..9280f2a 100644
--- a/toxygen/avwidgets.py
+++ b/toxygen/avwidgets.py
@@ -7,8 +7,6 @@ import wave
 import settings
 from util import curr_directory
 
-# TODO: improve IncomingCallWidget
-
 
 class IncomingCallWidget(widgets.CenteredWidget):
 
@@ -21,6 +19,7 @@ class IncomingCallWidget(widgets.CenteredWidget):
         self.avatar_label.setScaledContents(False)
         self.name = widgets.DataLabel(self)
         self.name.setGeometry(QtCore.QRect(90, 20, 300, 25))
+        self._friend_number = friend_number
         font = QtGui.QFont()
         font.setFamily(settings.Settings.get_instance()['font'])
         font.setPointSize(16)
@@ -53,10 +52,10 @@ class IncomingCallWidget(widgets.CenteredWidget):
         self.setWindowTitle(text)
         self.name.setText(name)
         self.call_type.setText(text)
-        pr = profile.Profile.get_instance()
-        self.accept_audio.clicked.connect(lambda: pr.accept_call(friend_number, True, False) or self.stop())
-        self.accept_video.clicked.connect(lambda: pr.accept_call(friend_number, True, True) or self.stop())
-        self.decline.clicked.connect(lambda: pr.stop_call(friend_number, False) or self.stop())
+        self._processing = False
+        self.accept_audio.clicked.connect(self.accept_call_with_audio)
+        self.accept_video.clicked.connect(self.accept_call_with_video)
+        self.decline.clicked.connect(self.decline_call)
 
         class SoundPlay(QtCore.QThread):
 
@@ -107,6 +106,30 @@ class IncomingCallWidget(widgets.CenteredWidget):
             self.thread.wait()
         self.close()
 
+    def accept_call_with_audio(self):
+        if self._processing:
+            return
+        self._processing = True
+        pr = profile.Profile.get_instance()
+        pr.accept_call(self._friend_number, True, False)
+        self.stop()
+
+    def accept_call_with_video(self):
+        if self._processing:
+            return
+        self._processing = True
+        pr = profile.Profile.get_instance()
+        pr.accept_call(self._friend_number, True, True)
+        self.stop()
+
+    def decline_call(self):
+        if self._processing:
+            return
+        self._processing = True
+        pr = profile.Profile.get_instance()
+        pr.stop_call(self._friend_number, False)
+        self.stop()
+
     def set_pixmap(self, pixmap):
         self.avatar_label.setPixmap(pixmap)