diff --git a/test/bigquery/dataset.js b/test/bigquery/dataset.js
index fc7746a8c91..40af0bb74b8 100644
--- a/test/bigquery/dataset.js
+++ b/test/bigquery/dataset.js
@@ -43,11 +43,6 @@ describe('BigQuery/Dataset', function() {
   var ds;
 
   before(function() {
-    // If we don't stub see4_crc32 and use mockery, we get "Module did not self-
-    // register".
-    var crc32c = require('hash-stream-validation/node_modules/sse4_crc32');
-    mockery.registerMock('sse4_crc32', crc32c);
-
     mockery.registerMock('../common/stream-router.js', fakeStreamRouter);
     mockery.enable({
       useCleanCache: true,
diff --git a/test/storage/file.js b/test/storage/file.js
index a53e81acbf6..0f0d7b0e126 100644
--- a/test/storage/file.js
+++ b/test/storage/file.js
@@ -80,11 +80,6 @@ describe('File', function() {
   var bucket;
 
   before(function() {
-    // If we don't stub see4_crc32 and use mockery, we get "Module did not self-
-    // register".
-    var crc32c = require('hash-stream-validation/node_modules/sse4_crc32');
-    mockery.registerMock('sse4_crc32', crc32c);
-
     mockery.registerMock('request', fakeRequest);
     mockery.registerMock('gcs-resumable-upload', fakeResumableUpload);
     mockery.registerMock('../common/util.js', fakeUtil);
diff --git a/test/storage/index.js b/test/storage/index.js
index 895bfd681e9..315472ad0e2 100644
--- a/test/storage/index.js
+++ b/test/storage/index.js
@@ -46,11 +46,6 @@ describe('Storage', function() {
   var Bucket;
 
   before(function() {
-    // If we don't stub see4_crc32 and use mockery, we get "Module did not self-
-    // register".
-    var crc32c = require('hash-stream-validation/node_modules/sse4_crc32');
-    mockery.registerMock('sse4_crc32', crc32c);
-
     mockery.registerMock('../common/util.js', fakeUtil);
     mockery.registerMock('../common/stream-router.js', fakeStreamRouter);
     mockery.enable({