diff --git a/types/koa-session/index.d.ts b/types/koa-session/index.d.ts
index 0db13c9614..f5499042f6 100644
--- a/types/koa-session/index.d.ts
+++ b/types/koa-session/index.d.ts
@@ -43,11 +43,11 @@ declare namespace session {
          * signed or not (default true)
          */
         signed?: boolean;
-        
+
         /**
-          * (boolean) Force a session identifier cookie to be set on every response. 
-          * The expiration is reset to the original maxAge, resetting the expiration countdown. 
-          * default is false.
+          * (boolean) Force a session identifier cookie to be set on every response
+          * The expiration is reset to the original maxAge, resetting the expiration countdown
+          * default is false
           */
         rolling?: boolean;