diff --git a/src/senaite/storage/subscribers/upgrade.py b/src/senaite/storage/subscribers/upgrade.py
index 5d434af..fd29b91 100644
--- a/src/senaite/storage/subscribers/upgrade.py
+++ b/src/senaite/storage/subscribers/upgrade.py
@@ -1,10 +1,16 @@
 # -*- coding: utf-8 -*-
 
+from senaite.storage import is_installed
+from senaite.storage import logger
 from senaite.storage.setuphandlers import post_install
 
 
 def afterUpgradeStepHandler(event):
     """Event handler that is executed after running an upgrade step of senaite.core
     """
+    if not is_installed():
+        return
+    logger.info("Run senaite.storage.afterUpgradeStepHandler ...")
     setup = event.context
     post_install(setup)
+    logger.info("Run senaite.storage.afterUpgradeStepHandler [DONE]")