diff --git a/godoc/static/godocs.js b/godoc/static/godocs.js
index 8003a1fe..387db110 100644
--- a/godoc/static/godocs.js
+++ b/godoc/static/godocs.js
@@ -236,7 +236,7 @@ function addPlusButtons() {
   var po = document.createElement('script');
   po.type = 'text/javascript';
   po.async = true;
-  po.src = 'https://apis.google.com/js/plusone.js';
+  po.src = 'https://apis.google.com/js/platform.js';
   var s = document.getElementsByTagName('script')[0];
   s.parentNode.insertBefore(po, s);
 }
diff --git a/godoc/static/static.go b/godoc/static/static.go
index b6852dd2..69bc9b1d 100644
--- a/godoc/static/static.go
+++ b/godoc/static/static.go
@@ -481,7 +481,7 @@ function addPlusButtons() {
   var po = document.createElement('script');
   po.type = 'text/javascript';
   po.async = true;
-  po.src = 'https://apis.google.com/js/plusone.js';
+  po.src = 'https://apis.google.com/js/platform.js';
   var s = document.getElementsByTagName('script')[0];
   s.parentNode.insertBefore(po, s);
 }