diff --git a/deep-diff/deep-diff.d.ts b/deep-diff/deep-diff.d.ts
index 1b96960a3..93e99f789 100644
--- a/deep-diff/deep-diff.d.ts
+++ b/deep-diff/deep-diff.d.ts
@@ -34,6 +34,8 @@ declare module deepDiff {
     }
 }
 
+declare var diff: deepDiff.IDeepDiff;
+
 declare module "deep-diff" {
     var diff: deepDiff.IDeepDiff;
     export = diff;