diff --git a/infection_monkey/utils.py b/infection_monkey/utils.py
index baef2372a..e2f66bd03 100644
--- a/infection_monkey/utils.py
+++ b/infection_monkey/utils.py
@@ -15,7 +15,11 @@ def get_dropper_log_path():
         else WormConfiguration.dropper_log_path_linux
 
 
-def is_64bit_os():
+def is_64bit_windows_os():
+    '''
+    Checks for 64 bit Windows OS using environment variables.
+    :return:
+    '''
     return 'PROGRAMFILES(X86)' in os.environ
 
 
diff --git a/infection_monkey/windows_upgrader.py b/infection_monkey/windows_upgrader.py
index 38cb3a479..cbd879c15 100644
--- a/infection_monkey/windows_upgrader.py
+++ b/infection_monkey/windows_upgrader.py
@@ -10,7 +10,7 @@ from config import WormConfiguration
 from control import ControlClient
 from exploit.tools import build_monkey_commandline_explicitly
 from model import MONKEY_CMDLINE_WINDOWS
-from utils import is_windows_os, is_64bit_os, is_64bit_python
+from utils import is_windows_os, is_64bit_windows_os, is_64bit_python
 
 __author__ = 'itay.mizeretz'
 
@@ -27,7 +27,7 @@ class WindowsUpgrader(object):
 
     @staticmethod
     def should_upgrade():
-        return is_windows_os() and is_64bit_os() \
+        return is_windows_os() and is_64bit_windows_os() \
                and not is_64bit_python()
 
     @staticmethod