diff --git a/lib/entropy/client/interfaces/dep.py b/lib/entropy/client/interfaces/dep.py
index c428f6c2c..178efc3c5 100644
--- a/lib/entropy/client/interfaces/dep.py
+++ b/lib/entropy/client/interfaces/dep.py
@@ -2822,7 +2822,7 @@ class CalculatorsMixin:
             [((package_id, repository_id), reason_id), ...]
         @rtype: list
         """
-        cache_key = "available/masked_v2" % (
+        cache_key = "available/masked_%s_v2" % (
             self._get_available_packages_hash(),
         )