diff --git a/packages/backend/src/server/api/ApiCallService.ts b/packages/backend/src/server/api/ApiCallService.ts
index 8dd0ba494555..809726226851 100644
--- a/packages/backend/src/server/api/ApiCallService.ts
+++ b/packages/backend/src/server/api/ApiCallService.ts
@@ -321,10 +321,10 @@ export class ApiCallService implements OnApplicationShutdown {
 		if (ep.meta.requireRolePolicy != null && !user!.isRoot) {
 			const policies = await this.roleService.getUserPolicies(user!.id);
 			let denied: boolean;
-			if (Array.isArray(ep.meta.requireRolePolicy)) {
-				denied = ep.meta.requireRolePolicy.some(policy => !policies[policy]);
-			} else {
+			if (typeof ep.meta.requireRolePolicy === 'string') {
 				denied = !policies[ep.meta.requireRolePolicy];
+			} else {
+				denied = ep.meta.requireRolePolicy.some(policy => !policies[policy]);
 			}
 			if (denied) {
 				throw new ApiError({