diff --git a/src/app.py b/src/app.py
index b3e34221d..21219b2ce 100644
--- a/src/app.py
+++ b/src/app.py
@@ -1801,6 +1801,7 @@ class AppConfigPanel(ConfigPanel):
     entity_type = "app"
     save_path_tpl = os.path.join(APPS_SETTING_PATH, "{entity}/settings.yml")
     config_path_tpl = os.path.join(APPS_SETTING_PATH, "{entity}/config_panel.toml")
+    settings_must_be_defined: bool = True
 
     def _get_raw_settings(self, config: "ConfigPanelModel") -> "RawSettings":
         return self._call_config_script("show")
diff --git a/src/utils/configpanel.py b/src/utils/configpanel.py
index d79b8a80a..325f6579d 100644
--- a/src/utils/configpanel.py
+++ b/src/utils/configpanel.py
@@ -279,6 +279,7 @@ class ConfigPanel:
     save_path_tpl: Union[str, None] = None
     config_path_tpl = "/usr/share/yunohost/config_{entity_type}.toml"
     save_mode = "full"
+    settings_must_be_defined: bool = False
     filter_key: "FilterKey" = (None, None, None)
     config: Union[ConfigPanelModel, None] = None
     form: Union["FormModel", None] = None
@@ -627,7 +628,7 @@ class ConfigPanel:
                     value = option.default
                 elif option.type is OptionType.file or option.bind == "null":
                     continue
-                else:
+                elif self.settings_must_be_defined:
                     raise YunohostError(
                         f"Config panel question '{option.id}' should be initialized with a value during install or upgrade.",
                         raw_msg=True,