diff --git a/monkey/monkey_island/cc/setup/island_config_options_validator.py b/monkey/monkey_island/cc/setup/island_config_options_validator.py
index 66df126be..fcfa524ca 100644
--- a/monkey/monkey_island/cc/setup/island_config_options_validator.py
+++ b/monkey/monkey_island/cc/setup/island_config_options_validator.py
@@ -26,9 +26,9 @@ def _raise_if_incorrect_permissions(
     f: str, linux_expected_permissions: int, windows_expected_permissions: int
 ):
     expected_permissions = (
-        windows_expected_permissions if is_windows_os() else linux_expected_permissions
+        windows_expected_permissions if is_windows_os() else oct(linux_expected_permissions)
     )
     if not has_expected_permissions(f, expected_permissions):
         raise InsecurePermissionsError(
-            f"The file {f} has incorrect permissions. Expected: {oct(expected_permissions)}"
+            f"The file {f} has incorrect permissions. Expected: {expected_permissions}"
         )