diff --git a/monkey/monkey_island/cc/services/directory_file_storage_service.py b/monkey/monkey_island/cc/services/directory_file_storage_service.py
index f8aeebe21..a4be91522 100644
--- a/monkey/monkey_island/cc/services/directory_file_storage_service.py
+++ b/monkey/monkey_island/cc/services/directory_file_storage_service.py
@@ -54,6 +54,7 @@ class DirectoryFileStorageService(IFileStorageService):
             logger.debug(f"Deleting {safe_file_path}")
             safe_file_path.unlink()
         except FileNotFoundError:
+            # This method is idempotent.
             pass
 
     def _get_safe_file_path(self, unsafe_file_name: str):
diff --git a/monkey/monkey_island/cc/services/i_file_storage_service.py b/monkey/monkey_island/cc/services/i_file_storage_service.py
index 5903c07d1..31c49cd00 100644
--- a/monkey/monkey_island/cc/services/i_file_storage_service.py
+++ b/monkey/monkey_island/cc/services/i_file_storage_service.py
@@ -38,6 +38,9 @@ class IFileStorageService(metaclass=abc.ABCMeta):
         """
         Delete a file
 
+        This method will delete the file specified by `unsafe_file_name`. This operation is
+        idempotent and will succeed if the file to be deleted does not exist.
+
         :param unsafe_file_name: An unsanitized file name that identifies the file to be deleted
         """
         pass