diff --git a/packages/common/src/util.js b/packages/common/src/util.js
index 830d36a07ea..9f90ca43ea3 100644
--- a/packages/common/src/util.js
+++ b/packages/common/src/util.js
@@ -48,7 +48,7 @@ var errorMessage = format([
   'connection.'
 ].join(' '), {
   baseUrl: 'https://googlecloudplatform.github.io/google-cloud-node/#',
-  path: '/docs/guides/authentication'
+  path: 'docs/guides/authentication'
 });
 
 var missingProjectIdError = new Error(errorMessage);
diff --git a/packages/common/test/util.js b/packages/common/test/util.js
index 00135f2bb79..7a2e5e217cf 100644
--- a/packages/common/test/util.js
+++ b/packages/common/test/util.js
@@ -110,7 +110,7 @@ describe('common/util', function() {
       'an authenticated connection.'
     ].join(' '), {
       baseUrl: 'https://googlecloudplatform.github.io/google-cloud-node/#',
-      path: '/docs/guides/authentication'
+      path: 'docs/guides/authentication'
     });
 
     var missingProjectIdError = new Error(errorMessage);