diff --git a/packages/shared/src/viewer/helpers/state.ts b/packages/shared/src/viewer/helpers/state.ts
index fa1b4125b..6df3d0894 100644
--- a/packages/shared/src/viewer/helpers/state.ts
+++ b/packages/shared/src/viewer/helpers/state.ts
@@ -112,8 +112,7 @@ export type SerializedViewerState = {
         key: Nullable<string>
         isApplied: boolean
       }
-      // New multi-filter system (optional for backward compatibility)
-      propertyFilters?: Array<{
+      propertyFilters: Array<{
         key: Nullable<string>
         isApplied: boolean
         selectedValues: string[]