diff --git a/controllers/admin.js b/controllers/admin.js
index 6bca36e1c..596780093 100644
--- a/controllers/admin.js
+++ b/controllers/admin.js
@@ -465,7 +465,7 @@ exports.adminNpmListView = function (aReq, aRes, aNext) {
     return;
   }
 
-  exec('npm ls --json', function (aErr, aStdout, aStderr) {
+  exec('npm ls --json', { maxBuffer: 400 * 1024 }, function (aErr, aStdout, aStderr) {
     var stdout = null;
 
     if (aErr) {