diff --git a/src/View/MainWindow.py b/src/View/MainWindow.py
index 7a893d4f33980e87b71e99aad5642c10c16fc886..5dc3dee8cc2a8f69421e4a2a265e0fd0b4dc3ff8 100644
--- a/src/View/MainWindow.py
+++ b/src/View/MainWindow.py
@@ -626,7 +626,6 @@ class ApplicationWindow(QMainWindow, ListedSubWindow, WindowToolKit):
         #     _translate("MainWindowdow", "Activate this windowdow")
         # )
         h = window.hash()
-        logger.info(f"Get hash: {h}")
         fn = lambda_generator(h)
         action.triggered.connect(fn)
 
diff --git a/src/View/Tools/ListedSubWindow.py b/src/View/Tools/ListedSubWindow.py
index 2a4d6e84dc067b16b9adf09fe90c9756972c78e4..d40e58ddf3e0526be967a751ac3ab660889433f3 100644
--- a/src/View/Tools/ListedSubWindow.py
+++ b/src/View/Tools/ListedSubWindow.py
@@ -43,10 +43,10 @@ class ListedSubWindow(object):
         self._update_window_list()
 
         try:
-            logger.info(
+            logger.debug(
                 f"Open window: {name}: {self._sub_win_cnt}")
         except Exception:
-            logger.info(f"Open window: {name}: {self._sub_win_cnt}: X")
+            logger.debug(f"Open window: {name}: {self._sub_win_cnt}: X")
             logger.warning(f"Sub window without hash method !")
 
     def sub_win_del(self, h):
@@ -59,7 +59,7 @@ class ListedSubWindow(object):
         self._sub_win_cnt = len(self._sub_win_list)
         self._update_window_list()
 
-        logger.info(f"Close window: ({h}) {self._sub_win_cnt}")
+        logger.debug(f"Close window: ({h}) {self._sub_win_cnt}")
 
     def _sub_win_exists(self, h):
         res = reduce(