diff --git a/tests/test_utils_pvpreload.py b/tests/test_utils_pvpreload.py
index 296873bc..ced7f588 100644
--- a/tests/test_utils_pvpreload.py
+++ b/tests/test_utils_pvpreload.py
@@ -33,7 +33,13 @@ def epics_ioc():
     
     thread = threading.Thread(target=ioc_thread, daemon=True)
     thread.start()
-    time.sleep(1) 
+    time.sleep(1)
+
+def configure_logzero_for_pytest():
+    logger.handlers.clear()
+    setup_default_logger(logging.DEBUG)  # force tous les logs dans caplog
+
+configure_logzero_for_pytest() 
 
 def is_pv_in_cache(name):
     return any(k[0] == name for k in epics.pv._PVcache_)