diff --git a/monkey/monkey_island/cc/repository/errors.py b/monkey/monkey_island/cc/repository/errors.py
index b7beb36fe..b9d5b7e47 100644
--- a/monkey/monkey_island/cc/repository/errors.py
+++ b/monkey/monkey_island/cc/repository/errors.py
@@ -1,2 +1,5 @@
 class RetrievalError(RuntimeError):
+    """
+    Raised when a repository encounters an error while attempting to retrieve data.
+    """
     pass