diff --git a/pickadate/pickadate.d.ts b/pickadate/pickadate.d.ts
index 38aed639a..ac8e7b181 100644
--- a/pickadate/pickadate.d.ts
+++ b/pickadate/pickadate.d.ts
@@ -330,7 +330,7 @@ declare module Pickadate {
         render?: () => void;
         start?: () => void;
         stop?: () => void;
-        set?: (thingset: any) => void;
+        set?: (thingSet: any) => void;
     }
 
     export interface SetObject {