diff --git a/packages/shared-core/src/filters.ts b/packages/shared-core/src/filters.ts
index e6cab22911..003e6b5082 100644
--- a/packages/shared-core/src/filters.ts
+++ b/packages/shared-core/src/filters.ts
@@ -455,19 +455,18 @@ export function splitFiltersArray(filters: LegacyFilter[]) {
  * Legacy support remains for the old **SearchFilter[]** format.
  * These will be migrated to an appropriate **SearchFilters** object, if encountered
  */
-export function buildQuery(filter: undefined): undefined
-export function buildQuery(
-  filter: UISearchFilter | LegacyFilter[]
-): SearchFilters
 export function buildQuery(
   filter?: UISearchFilter | LegacyFilter[]
-): SearchFilters | undefined {
+): SearchFilters {
   if (!filter) {
-    return
+    return {}
   }
 
   if (Array.isArray(filter)) {
-    filter = processSearchFilters(filter) ?? []
+    filter = processSearchFilters(filter)
+    if (!filter) {
+      return {}
+    }
   }
 
   const operator = logicalOperatorFromUI(
diff --git a/packages/shared-core/src/utils.ts b/packages/shared-core/src/utils.ts
index 01afbc2539..0e49db9c7c 100644
--- a/packages/shared-core/src/utils.ts
+++ b/packages/shared-core/src/utils.ts
@@ -139,11 +139,6 @@ export function isSupportedUserSearch(query: SearchFilters) {
   return true
 }
 
-export function processSearchFilters(filterArray: undefined): undefined
-export function processSearchFilters(filterArray: []): undefined
-export function processSearchFilters(
-  filterArray: LegacyFilter[]
-): Required<UISearchFilter>
 export function processSearchFilters(
   filterArray?: LegacyFilter[]
 ): Required<UISearchFilter> | undefined {