diff --git a/weboob/applications/boobcoming/boobcoming.py b/weboob/applications/boobcoming/boobcoming.py
index 65031d0d..b459d713 100644
--- a/weboob/applications/boobcoming/boobcoming.py
+++ b/weboob/applications/boobcoming/boobcoming.py
@@ -23,9 +23,33 @@ from datetime import time, datetime
 from weboob.tools.date import parse_date
 from weboob.tools.application.formatters.iformatter import IFormatter, PrettyFormatter
 from weboob.capabilities.base import empty
-from weboob.capabilities.calendar import ICapCalendarEvent, Query, CATEGORIES
+from weboob.capabilities.calendar import ICapCalendarEvent, Query, CATEGORIES, BaseCalendarEvent
+from weboob.tools.application import repl
 from weboob.tools.application.repl import ReplApplication, defaultcount
 
+def _comp_object(obj1, obj2):
+    if isinstance(obj1, BaseCalendarEvent) and isinstance(obj2, BaseCalendarEvent):
+        if obj1.start_date == obj2.start_date:
+            return 0
+        if obj1.start_date > obj2.start_date:
+            return 1
+        return -1
+    else:
+        if obj1.backend == obj2.backend:
+            if obj1.id == obj2.id:
+                return 0
+            elif obj1.id > obj2.id:
+                return 1
+            else:
+                return -1
+        elif obj1.backend > obj2.backend:
+            return 1
+        else:
+            return -1
+
+repl.comp_object = _comp_object
+
+
 __all__ = ['Boobcoming']