diff --git a/esp/src/src/store/Memory.ts b/esp/src/src/store/Memory.ts
index ec36b30414c..1bec0fee3e6 100644
--- a/esp/src/src/store/Memory.ts
+++ b/esp/src/src/store/Memory.ts
@@ -69,7 +69,7 @@ export class Memory<T extends BaseRow = BaseRow> extends BaseStore<T, T> {
         }
     }
 
-    protected fetchData(request: QueryRequest<T>, options: QueryOptions<T>): ThenableResponse<T> {
+    protected fetchData(request: QueryRequest<T>, options: QueryOptions<T> = {}): ThenableResponse<T> {
         options.alphanumColumns = this.alphanumSort;
         const data = this.queryEngine(request, options)(this.data);
         data.total = this.data.length;
diff --git a/esp/src/src/store/Store.ts b/esp/src/src/store/Store.ts
index 41dea790b39..d41d24e893c 100644
--- a/esp/src/src/store/Store.ts
+++ b/esp/src/src/store/Store.ts
@@ -21,7 +21,7 @@ export interface QueryOptions<T> {
     start?: number;
     count?: number;
     sort?: QuerySort<T>;
-    alphanumColumns: { [id: string]: boolean };
+    alphanumColumns?: { [id: string]: boolean };
 }
 
 export abstract class BaseStore<R extends BaseRow, T extends BaseRow> {