diff --git a/syncplay/client.py b/syncplay/client.py
index e6d7934..dc7bef9 100755
--- a/syncplay/client.py
+++ b/syncplay/client.py
@@ -40,8 +40,9 @@ from syncplay.constants import PRIVACY_SENDHASHED_MODE, PRIVACY_DONTSEND_MODE, \
     PRIVACY_HIDDENFILENAME
 from syncplay.messages import getMissingStrings, getMessage
 from syncplay.protocols import SyncClientProtocol
-from syncplay.utils import isMacOS
+from syncplay.utils import isMacOS, fixMacEnvironmentVars
 
+fixMacEnvironmentVars()
 
 class SyncClientFactory(ClientFactory):
     def __init__(self, client, retry=constants.RECONNECT_RETRIES):
diff --git a/syncplay/players/mplayer.py b/syncplay/players/mplayer.py
index a46e77f..de9b21e 100755
--- a/syncplay/players/mplayer.py
+++ b/syncplay/players/mplayer.py
@@ -339,20 +339,7 @@ class MplayerPlayer(BasePlayer):
             env = os.environ.copy()
             if 'TERM' in env:
                 del env['TERM']
-            # On macOS, youtube-dl requires system python to run. Set the environment
-            # to allow that version of python to be executed in the mpv subprocess.
-            if isMacOS():
-                try:
-                    pythonLibs = subprocess.check_output(['/usr/bin/python', '-E', '-c',
-                                                          'import sys; print(sys.path)'],
-                                                          text=True, env=dict())
-                    pythonLibs = ast.literal_eval(pythonLibs)
-                    pythonPath = ':'.join(pythonLibs[1:])
-                except:
-                    pythonPath = None
-                if pythonPath is not None:
-                    env['PATH'] = '/usr/bin:/usr/local/bin'
-                    env['PYTHONPATH'] = pythonPath
+
             if filePath:
                 self.__process = subprocess.Popen(
                     call, stdout=subprocess.PIPE, stdin=subprocess.PIPE, stderr=subprocess.STDOUT,
diff --git a/syncplay/utils.py b/syncplay/utils.py
index 5a394d3..36de7be 100755
--- a/syncplay/utils.py
+++ b/syncplay/utils.py
@@ -506,3 +506,27 @@ class RandomStringGenerator(object):
 
 class NotControlledRoom(Exception):
     pass
+
+def fixMacEnvironmentVars():
+    if getattr(sys, 'frozen', None) != 'macosx_app':
+        return
+    # py2app, used on macOS, sets a number of environment variables
+    # which are meant for our own Python interpreter but will leak
+    # into youtube-dl invoked by mpv.
+    # The best we can do is unset them, though it would be better
+    # if we could restore the values they originally had before
+    # py2app changed them.
+    keys_to_remove = [key for key in os.environ if key.startswith('PYTHON')]
+    for key in keys_to_remove:
+        del os.environ[key]
+
+    # Also, add Homebrew to PATH even if it's not in the PATH used
+    # for apps.
+    paths = os.environ.get('PATH', '').split(':')
+    if paths == ['']:
+        paths = []
+    local = '/usr/local/bin'
+    if local not in paths:
+        paths.append(local)
+    os.environ['PATH'] = ':'.join(paths)
+