diff --git a/src/lib/types/option.ts b/src/lib/types/option.ts
index 462e919580..7491505d4e 100644
--- a/src/lib/types/option.ts
+++ b/src/lib/types/option.ts
@@ -127,7 +127,6 @@ export interface IUnleashOptions {
     enterpriseVersion?: string;
     inlineSegmentConstraints?: boolean;
     clientFeatureCaching?: Partial<IClientCachingOption>;
-    flagResolver?: IFlagResolver;
     accessControlMaxAge?: number;
     prometheusApi?: string;
     publicFolder?: string;