diff --git a/notifypy/os_notifiers/macos.py b/notifypy/os_notifiers/macos.py
index 68731fb..53fcee3 100644
--- a/notifypy/os_notifiers/macos.py
+++ b/notifypy/os_notifiers/macos.py
@@ -75,7 +75,7 @@ class MacOSNotifier(BaseNotifier):
     def _find_installed_afplay():
         """Function to find the path for afplay"""
         try:
-            run_which_for_aplay = subprocess.check_output(["which", "afplay"])
+            run_which_for_aplay = subprocess.check_output(["@which@", "afplay"])
             return run_which_for_aplay.decode("utf-8")
         except subprocess.CalledProcessError:
             logger.exception("Unable to find aplay.")