diff --git a/types/yar/index.d.ts b/types/yar/index.d.ts
index db32834288..678d3e49a9 100644
--- a/types/yar/index.d.ts
+++ b/types/yar/index.d.ts
@@ -146,8 +146,7 @@ declare namespace yar {
          * 'isOverride' used to indicate that the message provided should replace
          * any existing value instead of being appended to it (defaults to false).
          */
-        flash(type: string): any[];
-        flash(type: string, message: any, isOverride?: boolean): any[];
+        flash(type: string, message?: any, isOverride?: boolean): any[];
 
         /**
          * if set to 'true', enables lazy mode.