diff --git a/lib/pow.js b/lib/pow.js
index c0ad44c..ffac708 100644
--- a/lib/pow.js
+++ b/lib/pow.js
@@ -83,7 +83,7 @@ exports.check = function(opts) {
  * @return {Promise.<Buffer>} A promise that contains computed nonce for
  * the given target when fulfilled.
  */
-exports.do = function(opts) {
+exports.doAsync = function(opts) {
   var initialHash;
   if (opts.payload) {
     initialHash = bmcrypto.sha512(opts.payload);
diff --git a/test.js b/test.js
index b01b42c..322417d 100644
--- a/test.js
+++ b/test.js
@@ -282,7 +282,7 @@ describe("POW", function() {
   if (allTests) {
     it("should do a POW", function() {
       this.timeout(300000);
-      return POW.do({target: 10693764680411, initialHash: Buffer("8ff2d685db89a0af2e3dbfd3f700ae96ef4d9a1eac72fd778bbb368c7510cddda349e03207e1c4965bd95c6f7265e8f1a481a08afab3874eaafb9ade09a10880", "hex")})
+      return POW.doAsync({target: 10693764680411, initialHash: Buffer("8ff2d685db89a0af2e3dbfd3f700ae96ef4d9a1eac72fd778bbb368c7510cddda349e03207e1c4965bd95c6f7265e8f1a481a08afab3874eaafb9ade09a10880", "hex")})
         .then(function(nonce) {
           // Multiple valid nonces.
           expect([2373146, 2543600]).to.include(nonce);