diff --git a/q/Q.d.ts b/q/Q.d.ts
index 617bf0140..f567c5871 100644
--- a/q/Q.d.ts
+++ b/q/Q.d.ts
@@ -101,6 +101,11 @@ declare module Q {
          */
         done(onFulfilled?: (value: T) => any, onRejected?: (reason: any) => any, onProgress?: (progress: any) => any): void;
 
+        /**
+         * If callback is a function, assumes it's a Node.js-style callback, and calls it as either callback(rejectionReason) when/if promise becomes rejected, or as callback(null, fulfillmentValue) when/if promise becomes fulfilled. If callback is not a function, simply returns promise.
+         */
+        nodeify(callback: (reason: any, value: any) => void): void;
+
         /**
          * Returns a promise to get the named property of an object. Essentially equivalent to
          * 
@@ -161,7 +166,7 @@ declare module Q {
          * Returns whether a given promise is in the pending state. When the static version is used on non-promises, the result is always false.
          */
         isPending(): boolean;
-
+        
         valueOf(): any;
 
         /**