diff --git a/apps/red-ui/src/app/modules/dossier-overview/config.service.ts b/apps/red-ui/src/app/modules/dossier-overview/config.service.ts
index 1e1f189f4..3361e3ab4 100644
--- a/apps/red-ui/src/app/modules/dossier-overview/config.service.ts
+++ b/apps/red-ui/src/app/modules/dossier-overview/config.service.ts
@@ -215,7 +215,11 @@ export class ConfigService {
                         filters = dynamicFilters.get(filterKey);
                     }
                     const filterValue = file.fileAttributes?.attributeIdToValue[config.id];
-                    filters.add(filterValue);
+                    if (filterValue === undefined || filterValue === null) {
+                        filters.add(undefined);
+                    } else {
+                        filters.add(filterValue);
+                    }
                 }
             });
         });