diff --git a/types/kolite/knockout.dirtyFlag.d.ts b/types/kolite/knockout.dirtyFlag.d.ts
index 2f63a110e0..3999f833ae 100644
--- a/types/kolite/knockout.dirtyFlag.d.ts
+++ b/types/kolite/knockout.dirtyFlag.d.ts
@@ -10,9 +10,14 @@
 // DirtyFlag /////////////////////////////////////////////
 
 interface DirtyFlag {
-    isDirty: KnockoutComputed<boolean>;
     new (objectToTrack: any, isInitiallyDirty?: boolean, hashFunction?: () => any): any;
+    (): DirtyFlagResult;
+}
+
+interface DirtyFlagResult {
+    isDirty: KnockoutComputed<boolean>;
     reset(): void;
+    forceDirty(): void; 
 }
 
 interface KnockoutStatic {