diff --git a/src-ui/src/app/data/custom-field.ts b/src-ui/src/app/data/custom-field.ts
index 7e52d0785..bca77dd51 100644
--- a/src-ui/src/app/data/custom-field.ts
+++ b/src-ui/src/app/data/custom-field.ts
@@ -59,4 +59,5 @@ export interface CustomField extends ObjectWithId {
     select_options?: string[]
     default_currency?: string
   }
+  document_count?: number
 }