diff --git a/helpers.py b/helpers.py
index b68cc32..4dd30d1 100644
--- a/helpers.py
+++ b/helpers.py
@@ -177,6 +177,8 @@ def class_for_name(module_name: str, class_name: str):
 
 def warnAboutCurveGeoms(layers: Iterable[QgsMapLayer]):
     for layer in layers:
+        if not isLayerSupported(layer):
+            continue
         if layer.storageType().upper() in ['GPKG', 'SQLITE'] and QgsWkbTypes.isCurvedType(layer.wkbType()):
             txt = tr('The layer "{layername}" has an unsupported geometry type: '
                      '"Circularstring", "CompoundCurve", "CurvePolygon", "MultiCurve", "MultiSurface", '