diff --git a/python/plugins/db_manager/layer_preview.py b/python/plugins/db_manager/layer_preview.py
index 9b9ea8c87b4..a5471ce06d9 100644
--- a/python/plugins/db_manager/layer_preview.py
+++ b/python/plugins/db_manager/layer_preview.py
@@ -126,10 +126,10 @@ class LayerPreview(QgsMapCanvas):
                 self.setLayers([vl])
                 QgsProject.instance().addMapLayers([vl], False)
                 self.zoomToFullExtent()
+                self.currentLayerId = vl.id()
             else:
                 self.setLayers([])
-
-            self.currentLayerId = vl.id()
+                self.currentLayerId = None
 
             self.freeze(False)
             super().refresh()