diff --git a/projects/common-map/src/fm-map/effects/map.effects.ts b/projects/common-map/src/fm-map/effects/map.effects.ts
index 8f09c2c..9fb94a2 100644
--- a/projects/common-map/src/fm-map/effects/map.effects.ts
+++ b/projects/common-map/src/fm-map/effects/map.effects.ts
@@ -343,7 +343,7 @@ export class MapEffects {
     mergeMap(([[[action, selected], enabled],overlayLayers]) => {
       let layers = [];      
       if(selected) {
-        if(selected instanceof TemporalItemLayer ) {
+        if(selected && (selected as TemporalItemLayer).selectedItemLayer ) {
            selected=(selected as TemporalItemLayer).selectedItemLayer;
         }
         layers.push(selected);