diff --git a/lizmap/project_checker_tools.py b/lizmap/project_checker_tools.py
index 3f583180..bf0dcfac 100644
--- a/lizmap/project_checker_tools.py
+++ b/lizmap/project_checker_tools.py
@@ -506,7 +506,7 @@ def duplicated_rule_key_legend(project: QgsProject) -> Dict[str, Dict[str, int]]
     return data
 
 
-def duplicated_label_legend(project: QgsProject) -> Dict[str, list[str]]:
+def duplicated_label_legend(project: QgsProject) -> Dict[str, List[str]]:
     """ Check for all duplicated labels in the legend, per layer. """
     results = {}
     for layer in project.mapLayers().values():
@@ -517,12 +517,12 @@ def duplicated_label_legend(project: QgsProject) -> Dict[str, list[str]]:
 
         # From QGIS source code :
         # https://github.com/qgis/QGIS/blob/71499aacf431d3ac244c9b75c3d345bdc53572fb/src/core/symbology/qgsrendererregistry.cpp#L33
-        if renderer.type() in ("categorizedSymbol", "RuleRenderer", "graduatedSymbol"):
+        if renderer.type() in ("RuleRenderer", ):
             results[layer.id()] = _duplicated_label_legend_layer(renderer)
     return results
 
 
-def _duplicated_label_legend_layer(renderer: QgsFeatureRenderer) -> list[str]:
+def _duplicated_label_legend_layer(renderer: QgsFeatureRenderer) -> List[str]:
     """ Check at the renderer level for the check above. """
     # noinspection PyUnresolvedReferences
     root_rule = renderer.rootRule()
diff --git a/lizmap/widgets/check_project.py b/lizmap/widgets/check_project.py
index 31c92dd2..9ad61540 100644
--- a/lizmap/widgets/check_project.py
+++ b/lizmap/widgets/check_project.py
@@ -542,7 +542,7 @@ def __init__(self):
             'duplicated_rule_key_label_legend',
             tr('The layer has some duplicated "label" in its legend'),
             tr(
-                "The layer should not have duplicated labels within its own legend. This is limitation on QGIS Server."
+                "The layer should not have duplicated labels within its own legend. This is a limitation on QGIS Server."
             ), (
                 '<ul>'
                 '<li>{}</li>'