diff --git a/monkey/infection_monkey/exploit/caching_agent_repository.py b/monkey/infection_monkey/exploit/caching_agent_repository.py
index 5dd8a603c..499e8401c 100644
--- a/monkey/infection_monkey/exploit/caching_agent_repository.py
+++ b/monkey/infection_monkey/exploit/caching_agent_repository.py
@@ -23,17 +23,20 @@ class CachingAgentRepository(IAgentRepository):
         self._proxies = proxies
         self._lock = threading.Lock()
 
-    def get_agent_binary(self, os: OperatingSystems, architecture: str = None) -> io.BytesIO:
+    def get_agent_binary(
+        self, operating_system: OperatingSystems, architecture: str = None
+    ) -> io.BytesIO:
         # If multiple calls to get_agent_binary() are made simultaneously before the result of
         # _download_binary_from_island() is cached, then multiple requests will be sent to the
         # island. Add a mutex in front of the call to _download_agent_binary_from_island() so
         # that only one request per OS will be sent to the island.
         with self._lock:
-            return io.BytesIO(self._download_binary_from_island(os))
+            return io.BytesIO(self._download_binary_from_island(operating_system))
 
     @lru_cache(maxsize=None)
-    def _download_binary_from_island(self, os: OperatingSystems) -> bytes:
-        os_name = os.name.lower()
+    def _download_binary_from_island(self, operating_system: OperatingSystems) -> bytes:
+        os_name = operating_system.name.lower()
+
         response = requests.get(  # noqa: DUO123
             f"{self._island_url}/api/agent-binaries/{os_name}",
             verify=False,