diff --git a/database/getReportData.d.ts b/database/getReportData.d.ts
index bff83ce3..3702f415 100644
--- a/database/getReportData.d.ts
+++ b/database/getReportData.d.ts
@@ -1,2 +1,2 @@
-export type ReportParameters = Record<string, string | number>;
-export default function getReportData(reportName: string, reportParameters?: ReportParameters): Promise<unknown[] | undefined>;
+export type ReportParameters = Record<string, number | string>;
+export default function getReportData(reportName: string, reportParameters?: ReportParameters): Promise<undefined | unknown[]>;